Basic information about mountaineering bags

In the early days, the most common support mechanisms for mountaineering bags were U-shaped tubes or double aluminum bar supports. Later, in order to enhance the stability of the backpack, improved backpacks adopted "T"-shaped supports. The Performic series backpacks produced by the German company BIGPACK are supported by an alloy tube frame. The material selection is made of high-strength and high-elastic aluminum alloy tubes, which not only reduces the weight of the support material, but also makes the force more uniform. Its varieties above 55 liters are also equipped with lumbar support, making the load-bearing and force-bearing more integrated. In terms of shoulder fulcrum processing, the performic series uses soft and light ventilation materials to bulge to form a concave part on the back, thus effectively solving the ventilation problem. The mountaineering bag backpack adjustment mechanism can be divided into upward adjustment and downward adjustment. For upward adjustment, the adjustment point is usually set at the root of the shoulder strap, while for downward adjustment, an adjustment device is installed in the middle of the waist belt. Although these two types of adjustments can also adjust the back size according to the height of the backpacker, they are subject to certain restrictions. The Performic series uses an infinitely adjustable shoulder and waist connection, which completely overcomes the limitations of the first two adjustment methods. The wearer can adjust to the best position according to personal requirements. The shoulder straps of professional mountaineering bags are equipped with force-bearing straps, with one or two sets of adjustment fulcrums. Their function is to adjust the distance between the backpack and the shoulders and bear the gravity of the upper part of the backpack; the thick belt of the mountaineering bag can make the gravity of the backpack even. The ground acts on the waist; the chest strap can adjust the distance between the shoulder straps to enhance the stability of the backpack and facilitate breathing. Reasonable space, loading system The loading system of a mountaineering bag refers to the part of the backpack that carries items. The design generally consists of a main bag, a top bag and a side bag. The main bag is mostly designed in an upper and lower layered type, that is, there is one at the upper end and one at the lower end. It has an opening and a movable compartment in the middle, which can be connected or disconnected. Its advantage is that the user can pack items according to needs and take them out easily when used. Some backpacks are designed with side bags, also called ear bags, which look like two ears on both sides of the backpack. For the convenience of plug-in, some bags also adopt a movable side bag design, which can be installed at any time when in use and can be removed when not in use or when plug-in is used. The art of bundling, plug-in system A professional mountaineering bag, plug-in system is essential. The backpack's external hangers can be divided into top hangers, side hangers, back hangers, bottom hangers, etc., usually in the form of point fixation or strip fixation. The point-hanging type generally has two or four corresponding hanging points, and is bundled and fixed with two or four points when used; the strip-hanging type usually installs two rows of external hanging strips on the front of the backpack, each with several fixed points to fix items. More casual and less affected by form.

Although mountaineering bags are designed with external attachment points, most of them are not equipped with external attachment straps. Users can fix them with soft nylon ropes, or go to a mountaineering equipment store to purchase standard external attachment straps. The brand concept of backpacks Not long after mountaineering bags were launched in my country, the earliest mountaineering bag launched in my country was Hong Kong's Niikko. Having a mountaineering bag with excellent performance has become the wish of many backpackers. In recent years, many businesses have been optimistic about the mountaineering equipment market and have gradually stepped into this field. The brands now available on the market include: VAUDE and BIG PACK from Germany, ONARK from Switzerland, GIANT from South Korea, and domestic Kailas. These backpacks have the same appearance, but due to differences in design, fabrics, and production processes, their quality is also different. How to choose a backpack that suits you? The following five aspects can be considered:

A. Choose the volume of the backpack based on the number of items to be loaded. If the trip time is short, you are not planning to camp outdoors, and you do not want to carry many items, you should choose a backpack with a small volume. Generally, 25 liters to 45 liters are enough according to the instructions. This kind of backpack generally has a relatively simple structure, with no or less external accessories. In addition to a main bag, it usually has 3-5 additional pockets to facilitate classification and loading of items. If the trip takes a long time or you need to carry camping equipment, then Choose a large bag, preferably 50 liters to 70 liters. If you need to carry a lot of items or a larger volume, you can choose a large backpack of 820 liters, or a backpack with more external accessories.

B. Choose the type of backpack according to the purpose of the backpack. They are both mountaineering bags, but their uses are different. For example, rock climbing bags specially designed for rock climbing activities generally do not have hard supports, so that they can be easily carried around. They have many external hanging points to facilitate hanging equipment. Some styles are also specially equipped with pads for organizing equipment. The bicycle series bags designed for cycling pay more attention to the characteristics of riding, and can be divided into backpack bags, pannier bags, etc. A mountaineering bag in a general sense can also be called a camping backpack. It is designed taking into account the characteristics of various forms of sports and the needs of long-distance marches. It is suitable for mountaineering, adventure adventures and woodland crossing activities. There are also backpacks specially designed for long-distance travel, which are called multi-purpose bags or multi-purpose bags. Their split structure is basically similar to a mountaineering bag. It can be carried on both shoulders and is layered up and down. It is also similar to a suitcase with a flip-up opening. , can be carried on one shoulder or carried horizontally or vertically. The large and small packages have a one-piece structure and can be separated or combined for easy use. It is very popular among business travelers. In short, all types of backpacks have their own unique scope of application. The best choice when purchasing a bag is a specialized bag.

C. Choose the size of the carrying system according to the body. The carrying system of the backpack has a specific range of application. Although the adjustable backpack has a larger range of application, it is not unlimited. Therefore, it is very important to choose the size of the carrying system when choosing a backpack.

What size is appropriate? Generally speaking, the waist stress point of the backpack should be on the waist socket above the tailbone, and the fulcrum of the shoulder strap should be roughly at shoulder level and slightly lower than the shoulder. This will facilitate the adjustment and force bearing of the stress belt and make it comfortable to carry. If the size of the back is too large, it will cause a falling feeling. On the contrary, it will have an upward feeling, causing the waist to be under-stressed. After adjusting to the appropriate size, the backpack will naturally stick to your back and be very comfortable.

D. Don't ignore the quality of materials. When choosing a backpack, many people tend to pay more attention to the color and shape of the backpack. In fact, the key to whether a backpack is strong and durable lies in the manufacturing material. Looking at the webbing, the price difference between ordinary webbing and high-quality webbing can be 3 to 5 times. The webbing selected by BIGPACK has a bearing capacity of more than 200 kilograms. Therefore, the two fabrics are very different in terms of strength and wear resistance. Destructive tests were conducted on the fabrics on a friction machine. They were both 500D fabrics. Ordinary nylon fabrics were damaged at 1075 revolutions, while DuPont fabrics were damaged at 1075 revolutions. Nylon cloth is broken only at 3605 revolutions, and its wear resistance is 3 times that of ordinary nylon. The famous brand backpacks on the market are more sophisticated in terms of materials and have better performance and quality.

E. Good structure and design are the guarantee of superior performance of the backpack. The important factor in the good performance of a mountaineering bag lies in its scientific and reasonable design structure. Good design not only gives you overall beauty, but more importantly, allows you to enjoy excellent performance during use. We can see this intuitively from the design structure of the BIGPACK TOP backpack. The structure of its carrying system absorbs the principles of Nepalese backpacks and adopts a double "V" design. First, the lined aluminum frame is in a "V" shape, with a crossbar positioned at the shoulder, and the aluminum frame is shaped according to the human body curve. The user can also fine-tune it according to the personal body shape; second, the loading part of the backpack is in a "V" shape. "The font is wide at the top and narrow at the bottom, thick at the top and thin at the bottom. It takes the shape of a basket after loading. This structure is more convenient for force transmission. The TOP series backpacks use an ETA-3 adjustment device. The adjustment part is equipped with 3 holes. The device is equipped with a structural pad to adjust the position of the holes, so that the size of the backpack can be changed. Changing the position of the structural padding can move the backpack's center of gravity up and down. The TOP series backpacks are also designed with a capacity-increasing device. The vertical capacity-increasing top bag is equipped with a zipper. When the zipper is released, the capacity of the backpack can be increased by about 10 liters. The horizontally adjustable backpack is equipped with two vertical zippers on the main bag. , when released, can make the backpack thicker and expand its capacity, which is especially suitable for carrying larger items. Users can adjust the height and width according to their needs. With such a backpack, it will definitely provide you with a lot of convenience when traveling. The use of backpacks As for the use of backpacks, after you understand the structural principles of mountaineering bags, its use methods are self-explanatory. Here, we recommend to readers a paragraph about Paige Company’s smart strategy for carrying heavy objects for backpackers’ reference.

We recommend that when the terrain is favorable, the center of gravity of the backpack should be moved to the upper part; when the terrain is less favorable, the center of gravity of the backpack should be moved to the middle. Generally, the order of loading items from top to bottom is: supplies, drinks, heavier equipment, lighter equipment, sleeping bags and clothing. Backpackers can experience it while using it. How to pack easily breakable things

Everything has been put into classified small bags, and then divided into two types: easily breakable and non-breakable things. Cameras, raw eggs, and flashlights are all easily damaged by impact and should be placed on the backpack. Place light but large-volume items under the backpack, such as sleeping bags, clothes, etc. In the middle, the tableware, small stove, and food items are loaded in order. Use cloth and newspaper as a buffer between them and breakable items. Before putting the flashlight into the bag, you should first check whether the switch is faulty. If the switch is easy to loosen, the flashlight battery may no longer be usable by the time you arrive at your destination. Therefore, you can flip the battery upside down in advance, or put paper between the batteries. (Remember to bring a spare battery. In addition, don't forget to bring a spare lamp bead. When the lamp bead on the flashlight burns out, it will be too late to remember it. ) Put light things on the bottom and heavy things on the top. Some people may think that for luggage in a backpack, light things should be placed on the top and heavy things on the bottom. In fact, it's just the opposite. You can understand it by looking at the luggage on your back. It's easy to fall backwards if you put heavy things down. When climbing, your body naturally bends forward. If something heavy is on top, your steps will be more stable and you can feel the weight of the thing. Otherwise, your steps will feel heavy and your body will be pulled downwards.

Adjustment skills

First of all, if you want to adjust it appropriately, you must know the names of each part of the backpack system. Only by becoming familiar with these components can you adjust these components to the appropriate position and maximize their functions to achieve the best carrying effect. How to adjust these parts to the appropriate position? This involves ergonomics, which requires us to measure the length of our torso (from the vertebrae at the back of the cervical spine to the vertebrae at the level of the hip bones), and hip circumference. Choose a hiking bag that suits you based on the measured size (the labels on the bags all have corresponding sizes provided by the manufacturer, just look for them according to the size!).

After selecting the package, all that remains is how to adjust it. First, we need to loosen both the belt and shoulder straps, and first tighten the belt appropriately around the hips. At this time, make sure that the belt is relaxed and not too tight. Tighten the shoulder straps so that there is no gap between the shoulder straps and the front, back and upper parts of the shoulders. At this time, tighten the belt again, but do not let a gap form between the shoulder straps and shoulders.

If the adjustment is correct, you will find that the top of the belt and the shoulder strap form an angle of about 45 to 60 degrees. If you see this angle, then everything is OK and half of the work is done! The next thing to do is the most critical thing. We need to keep every part of the mountaineering bag in the right place:

1. The belt surrounds the hip bones and the distance between the two ends of the belt is about 13CM.

2. Or the distance between the top of the backpack support system and the raised cervical vertebrae is about 5CM.

3. The waistband and the top of the shoulder strap form an angle of 45 to 60 degrees.

4. The carrying system must fit perfectly with the back

Packing method

1. How well a bag is packed depends on whether it can be placed on the ground Stand up on your own. If you can do this, you will be halfway there. 2. Make full use of the space in the bag. Fill the small, irregular spaces inside with something soft, such as clothing and socks.

3. Try to reduce carrying hard and heavy objects. If there are glass bottles, they should be replaced with plastic bottles. If there are outer packaging such as paper boxes and iron boxes, remove them to reduce weight.

4. Try to bring items that can be used for multiple purposes. Every time you come back, think about what things are of no use this time, so you don’t need to bring them next time (except for necessary survival items such as ropes, whistles, raincoats, emergency backup dry food and a little drinking water).

5. Try not to use plug-ins. The tent can be disassembled, insert the tent poles into the bag, fold the inner and outer tents and put them in the bag. If the moisture-proof cushion is not an air cushion, it can be tied to the side of the bag. Try not to place it on the top or bottom of the bag, in dense areas. Walking in the jungle can be difficult.

Filling a backpack is not about throwing all the items into the backpack, but about making it comfortable to carry and walking happily.

Generally, heavy items should be placed on the top to make the center of gravity of the backpack higher so that the wearer's waist can be straight during the journey. However, the center of gravity of intermediate mountains must be lowered so that the body can bend and move. When climbing among trees, or traveling on bare rock and wall climbing terrain, the center of gravity of the backpack during climbing (rock climbing backpack) is close to the pelvic position, which is the center point of body rotation, to prevent the weight of the backpack from shifting to the shoulders. During hiking, the backpack is filled The center of gravity can be higher and closer to the back.

Place heavy equipment on the upper end and on the backrest. Equipment such as stoves, cooking utensils, heavy food, rain gear, and water bottles. If the center of gravity is too low or far away from the back, the body will bend when walking. . The tent must be tied to the top of the backpack with an umbrella strap. Fuel oil and water must be placed separately to avoid contamination of food and clothing. Second-heavy items should be placed in the center and lower side straps of the backpack, such as spare clothing (must be sealed in plastic bags and in different bags). Color-coded straps so easy to identify), personal equipment, headlamp, map, compass, camera, light items tied underneath, such as sleeping bags (must be sealed with waterproof bags), camp poles can be placed in side bags, sleeping pads or The backpack must be prepared with long straps to tie some items, such as tripods, camp poles, or in side pockets when placed at the back of the backpack.

The backpacks suitable for men and women are not the same, because boys have a longer upper body and girls have a shorter upper body but longer legs. Choose a backpack that suits you carefully. Boys should place heavy objects higher when loading. , because the center of gravity of boys is close to the chest, while the center of gravity of girls is lower and closer to the abdomen. Heavy items should be as close to the back as possible, so that the weight is higher than the waist.

Fuel oil and food must be placed separately. Pay attention to filling the stove or pot set so as not to cause back discomfort. The pot set must be wiped clean when placed in the tent on rainy days.

During camping, if you are walking or crawling in woods or shrubs, it is more suitable to fill the backpack and lower the center of gravity. When camping, you can put the empty backpack under your feet and put it on the sleeping bag to insulate it from the cold ground and improve your sleeping quality. Temperature, you must clean your backpack when you come back. If it is too dirty, you can clean the backpack with a neutral detergent and place it in a cool place to air-dry. However, avoid exposing it to the sun for too long, because ultraviolet rays will damage the nylon cloth. You should still pay attention to basic maintenance during hiking. If the backpack is scratched, repair it immediately. Use a thicker needle and thread, which is specially used to mend chair cushions. The needle must be sewn firmly, and the nylon thread can be broken by fire.

The backpack must be stored in a cool, dry environment to avoid mold damage to the waterproof coating on the outer layer of the backpack fabric. Check the stability of the main support points, such as belts and shoulder straps, and the carrying system on a daily basis to avoid deterioration of the gaskets. Or it may be hardened without knowing it. Replace the zipper when it's time. Don't wait until things slip out of the backpack to fix it.

Packing method

Fits your torso

To measure your torso, extend a soft measuring tape and measure from your seventh vertebra (to your Starting from your neck (which has many protruding bones), follow the outline of your spine down to the low tip between your hip bones. To find that spot, place a hand on each hip and point with your thumb to that spot. Reduce the pain of your hip bones, that is a hip belt (hipbelt), not a belt. It should ride on your hips (the protruding part of your pelvis or pelvic area that extends sideways from your waist to your thighs) to transfer weight onto your bone structure. This is because of the connection between the strap and the bone, and the strap is padded. Make sure the pad doesn't touch in the front; you'll need some room to fasten it.

Suitable for your shoulders

Some shoulder straps emerge from the back like a big Y, and some look like a big H. Some you can adjust to fit your neck and shoulders. The shoulder straps should hold the pack just below the top of your shoulders.

From there, they should become a snug fit around your shoulders. The bottom of the strap should be at least a hand's width below your armpit so it doesn't sit up. If the straps don't match the contours of your neck and shoulders, they will pinch you and leave you with bruises. Adjust your lifting straps to a perfect 45-degree angle. The load-lifterstrap will help you move the weight around your shoulders, or even move the weight off your shoulders and onto your hips. . Once your hipbelt and shoulder straps are adjusted perfectly, it will feel like a strap is running from the top of your shoulders all the way to the frame and tightening it. Don't let your chest strap make breathing difficult, the strap and buckle connect the two shoulder straps to control where the pressure falls on your shoulders. Move this strap up or down to get the most comfortable position.

Keep your head free to move

If it's too high or too high, you won't be able to look up at the birds and clouds. Adjust your headband so it tilts away from your head. Your best bet for coordinating your load is to pretend you're considering going out for a long, cold hike when shopping for a bag. Pack everything you need into a canvas bag, including food (allow 1 to 2 pounds per day), and stash it in your finalist hiking bag. Then carry the pile around for a few more walks. Principle of weight-bearing

In order to illustrate the problem, let's make an assumption. Let's assume that two people with the same physical index are assumed. One person weighs 60KG and carries a weight of 25KG. Then the total weight of this person is 85KG, and the other person weighs 85KG. Then the two people The weights they bear are also equal. If both people walk 30 kilometers, who will have the advantage? Everyone will definitely say that unarmed people will have an advantage. This setting may not be very reasonable, but it can explain the problem in a certain sense. Why do unarmed people have the advantage? That's because the total weight of the unarmed person achieves the most perfect combination with himself. According to the force rules of carrying heavy objects, we can draw a conclusion - perfect combination and reasonable gravity transmission are the most scientific weight-bearing methods. So how can we achieve perfect combination and reasonable gravity transmission? This involves a core technology of backpacks. Everyone knows that the core technology of backpack comfort and load-bearing lies in the design of the backpack system. What problems need to be solved in the design of the backpack system for comfort and load-bearing? I think at least four aspects must be solved, namely stability, fit, ventilation, and reasonable gravity transmission. In fact, the four aspects are integrated in the design of the backpack.

A. Stability requires first determining a reasonable bearing point. According to the load-bearing principle of a backpack, the lumbar fossa above the tailbone is the main bearing point. The lumbar fossa connected to the top of the hip bones on both sides is the main stress-bearing area. The shoulders are the auxiliary force-bearing and balance areas. Therefore, the backpack should solve reasonable problems in the stress-bearing area. Load-bearing fulcrum distribution. I think the three-point support method is the most reasonable way to receive force. The two fulcrums on the shoulders are arranged left and right to avoid the lateral swing (rotation) of the backpack. The fulcrums on the waist and shoulders are arranged up and down to avoid the back and forth swing (rotation) of the backpack. Ventilation requires fulcrums. As few as possible, and stability requires at least three fulcrums, so it is best for the load-bearing fulcrums of the backpack to be reasonably distributed at three points.

B. The problem to be solved by fit is the reliable combination of the backpack and the body, and reliable combination is also a requirement for stability. The fit requires moderate tightness, loose will make it unstable, and tight will cause hoops. Therefore, the design of the fit of the backpack is usually solved by connection adjustment. Use the belt to adjust the fit of the waist and crotch, and use the double shoulder straps to adjust the fit of the upper back. For fit, use the bottom force strap to adjust the fit at the bottom of the backpack, and use the shoulder straps to adjust the fit at the top of the backpack. After you have reasonably adjusted the four fit force structures, you will feel that the backpack and body are blended together organically.

C. Ventilation solves the problem of heat dissipation. People will generate a lot of heat during exercise, especially in hot seasons. Poor heat dissipation will make people feel uncomfortable. Therefore, ventilation is needed to dissipate heat. The design of a good backpack to solve the problem of stability and fit usually involves protruding support points. The recessed part becomes an air channel, allowing the heat during movement to be dissipated in a timely manner.

D. The rationality of gravity transmission: The rationality of gravity transmission is the key to the carrying system. To solve the reasonable transmission of gravity, we must first understand the laws of gravity transmission. The ancestors of mankind have gained many valuable experiences in carrying heavy objects on their backs, such as the wooden barrels carried by the Portuguese, the baskets carried by the Nepalese, and the baskets carried by the herb collectors in the mountains of southern China. They are all classic examples of how human ancestors carried heavy objects. The backs they use have one unique feature, that is, they are all tapered in shape.

How to understand that the cone shape is the most reasonable way to transmit gravity? The weight of the object is transmitted from top to bottom due to the effect of gravity. A volume is larger at the top and smaller at the bottom. The objects are scattered at the top. As they gradually shrink from top to bottom, the center of gravity also gradually shrinks, and finally concentrates on the fulcrum below. , the size of this fulcrum should be easy to combine with the body and the force-bearing point. Therefore, the most important factor in the reasonable transmission of gravity is the shape of the backpack. Therefore, the reasonable shape of the backpack is large at the top and small at the bottom. Of course, the fit of the carrying system also Very important.

After understanding the rationality of gravity transmission, we also need to understand the issue of scientific load-bearing, that is, what kind of load-bearing method is the most labor-saving? I often see reports like this in the media, about traveling around the world or camping with a big bag on your back. Objectively speaking, this statement is wrong.

The concept of back is that the shoulders bear force and load. The transmission of gravity is from the shoulders to the waist, from the waist to the hips, from the hips to the legs and then to the feet. In fact, the whole body is exerting force. With multi-link force transmission, it is not difficult to increase physical consumption. Understood. If you only use your shoulders to bear the weight, you will definitely have sore shoulders and back pain at the end of the day. The scientific use of mountaineering bags should be that the waist is the main load-bearing force, and the center of gravity is placed on the waist, which reduces the transmission link of load-bearing force and reduces unnecessary physical exertion. It is natural to feel comfortable and relaxed when carrying it. The correct term should be that you are carrying a large bag, and your shoulders are only responsible for balancing and assisting in receiving force. We should also tell them relevant knowledge when recommending backpacks to customers.

Backpack Structure

In 1997, I published an article titled "Also Talking about Mountaineering Bags" in Beijing's "Travel" magazine, which for the first time proposed the structure of a mountaineering backpack. The concept is divided into three parts - namely, the backpack system, the loading system and the plug-in system. Later, many articles followed this formulation, and practice proved that this division was reasonable and accurate. The three major parts perform their own duties and share different responsibilities.

Backpack system: The function of the carryback system is to ensure load-bearing and carrying comfort. The structure includes shoulder straps, chest straps, waist belts, shoulder straps, bottom straps, support devices, ventilation devices and adjustment devices (referred to as five belts and three devices). The carrying system is the core of the technological content of a backpack. The biggest difference in the performance of a backpack lies in the carrying system. The carrying system of a mountaineering bag with good performance is not only designed to consider ventilation, but also facilitates gravity transmission, has strong load-bearing capacity and is comfortable.

Perfect carrying is achieved through gradual development. In the early days, common backpack support devices included U-shaped tubes and double aluminum bars; improved backpacks used “∏”-shaped aluminum sheets and touch panels for support, and were shaped according to the body curve; in order to improve backpack performance, at the end of the 20th century, European backpack manufacturers Invented the "TCS" backpack system. This backpack is supported by an alloy tube frame and is shaped using high-strength and high-elastic titanium alloy tubes, which greatly reduces the weight of the material and makes it stronger and more balanced. Its large volume The backpack is equipped with lumbar support to make the load-bearing force more integrated. In order to solve the problem of looking up while traveling, the system is designed with a recessed headrest. In order to adapt to different body types and personalities of the carriers, the lumbar fulcrum cushion of some backpacks can be opened and a pad is added inside, which can solve the problem of weak connection between the stress point and the lumbar fulcrum for those with thin buttocks. The humanized design makes the "TCS" backpacking system take the top spot for six consecutive years in the European mountaineering backpack backpack performance evaluation, and is known as the "intelligent backpacking system."

The ventilation device of the backpack system is an important indicator of the comfort of the backpack. Manufacturers usually use soft breathable materials to bulge, design the shoulders into shaped cushions, and install an adjustable breathable cushion at the lumbar pivot point to make the back Saddles are formed longitudinally and transversely, thereby improving ventilation.

The backpack system adjustment device is developed based on the fixed device. The fixed structure can only adapt to a specific height and is very inconvenient to use. Therefore, the manufacturer developed an adjustable backpack (generally common in European bags). ). Adjustable backpacks are divided into upward-adjustable and downward-adjustable backpacks: the upward-adjustable backpack generally has a step adjustment at the root of the shoulder strap, while the downward-adjustable backpack has an adjustment device installed in the middle of the waistband. Although these two types of adjustment methods can adjust the distance of the back according to the shape of the wearer, But subject to certain restrictions. In order to solve this contradiction, the manufacturer developed the infinitely adjustable waist-shoulder connection, which completely overcomes the limitations of the first two adjustment methods. The wearer can adjust it to the appropriate position according to personal needs to find the best feeling. There are still some brands that use fixed structures (common in American bags). They think fixed structures are more stable and use different sizes from S-L to adapt to height.

The five-belt function of the backpack system is to ensure the reliable combination of the backpack and the human body, ensure correct force transmission and assist in load-bearing. Its materials, craftsmanship, and design directly affect the comfort of carrying it. In order to ensure shoulder comfort, the manufacturer invented the "S" shoulder strap, so that the shoulder strap can open the neck and not block the shoulder socket. The material is molded at high temperature to form a multi-layer bubble film and the elastic Lycra outer layer makes the shoulder strap more comfortable. The pads are soft and comfortable; the shoulder straps are connected through the whole body, which not only ensures the adjustment of the center of gravity of the backpack, but also meets the load-bearing requirements; the chest strap is a small part of the backpack system, but it is not an insignificant part. The main function of the chest strap is to adjust The distance between the double shoulder straps enhances the stability of the backpack and facilitates breathing; the waist belt is the load-bearing part of the backpack, usually composed of a lumbar pad and a waist belt. It adopts a movable design. The belt is fixed at the bottom of the backpack with nylon stickers. After being removed, it can be finely adjusted up and down to adjust Find the best combination point; backpack waist bottom adjustment straps are divided into single straps and double straps. Professional backpacks are all double strap adjustments and cross-stressed, ensuring a reliable combination of the bottom of the backpack and the lumbar support and waist.

The structure of the backpack loading system is generally not too complicated, and usually consists of a main bag, a top bag, a side bag, and an additional bag. The main bag mostly adopts the upper and lower layered type, that is, there is an opening at the upper end and the middle, and a movable partition in the middle, which can be connected or disconnected. Its advantage is that the user can separate items according to needs, and can take out the upper and lower parts. The backpack top bag is also called a head bag. It is located on the top of the backpack. It has a single bag structure or a double bag structure. It is very convenient to store some small items. Side bags are also called ear bags, which look like two ears on both sides of the backpack. For the convenience of external hanging, some bags do not have side bags or use hidden side bag designs, and some use movable side bag designs that can be installed at any time during use. It can be removed when using the plug-in.

Accessory bags refer to small bags that are attached to the outside of the main bag and are attached to the front or side of the backpack to facilitate packing of items. Some accessory bags can be removed and used separately.

Although the function of the loading system is to load items, whether the design is scientific or not also directly affects comfort and force transmission. For example, the double "V" shape design concept of the backpack is to draw on the force principles of Nepali backpacks and Portuguese wine barrels, and design the supporting brackets into a "V" shape with a large top and a small bottom. The main bag of the backpack is also designed to have an upper shape. The main purpose of this design is to transfer gravity reasonably.

Plug-in system: The function of the backpack plug-in system is to increase the number of items carried and to facilitate the attachment of irregular items.

For a professional mountaineering bag, a plug-in system is essential. The external hanging system of the backpack can be divided into top hanging, side hanging, back hanging, bottom hanging, etc., usually using point fixing or strip fixing. The point-hanging type generally has one or two sets of corresponding hanging points, and is tied and fixed at four points when in use. The strip-hanging type usually installs two rows of external hanging strips on the front of the backpack, each with several fixed points. The fixed items are more random and less affected by the shape. The design of professional backpacks has many unique features, such as long and short ice ax hanging points at different heights; small pockets for holding side hanging items; unique crampon fixing structure and high-strength anti-puncture synthetic leather pads; making the external hanging system It is convenient and durable in use. This rational design derived from practice ensures the backpack’s perfect performance on the load.

Reasonable use of the external plug-in system can increase the capacity of your backpack for outdoor sports