What is a good backpack?

Many tourists don't pay much attention to the choice of bags, so they just take a bag and leave. In fact, it is very important to have a comfortable, durable and beautiful backpack. There are four types of backpacks on the market now: type, brand, type and backpack. The mountaineering backpack is specially designed for mountaineering. Generally, the bag is slender and divided into two layers. There is an aluminum frame supporting the bag body, and all items are put in by the top cover of the bag. There is also an ice pick cover on the bag, which is used to bind the ice pick and the snow pole. Mountaineering bag straps are mostly S-shaped, thick and wide, very comfortable to carry, and equipped with adjustable straps to enhance the weight of the backpack. Long-distance backpacks are generally rectangular, and the straps and belts are similar to mountaineering bags, which are also very comfortable. Moreover, the front of the bag can be completely opened, making it very convenient to take things, and some side pockets can hold things. Bicycle backpacks are specially designed for cycling, which can be divided into two types: bag hanging type and backpack type. Several kinds of bags are hung on the front handle and the rear frame of the car respectively; If you put your bike halfway, you can choose the backpack type. The back frame bag is made of light aluminum alloy, which is especially suitable for magnifying items, such as tents and photo boxes. The size of the backpack After choosing the type of backpack you need, you should also consider the size of the backpack. If you want to go to the countryside for photography, the backpack should not be less than 60 liters, because in addition to daily necessities, there must be a set of photographic equipment; If you are going hiking, it is best to choose a backpack of more than 50 liters, because there are tents and sleeping bags in the backpack; If you are on a business trip abroad, a backpack of about 35 liters is enough, and clothes and some daily necessities can be loaded. Generally speaking, a backpack of about 35 liters is also selected for suburban tourism, and a backpack of 15 liters to 20 liters is enough for urban areas. In short, choosing a backpack depends on how many things you bring. Materials for backpacks There are many kinds of materials for backpacks, which directly affect the price of backpacks, that is, the better the materials, the more expensive the backpacks are. General backpack materials mainly include: 420D Oxford nylon, 1000D nylon or 10000KODRA, 600D polypropylene and other materials. 1000D material is wearable. If it is used in the wild, you can choose this material. In recent years, a kind of anti-tear fabric has appeared abroad. The backpack made of this fabric will not expand once it is torn, which is very suitable for outdoor tourists.