Which is more suitable for traveling, backpack or suitcase?

Depending on your travel traffic, do you need to get on and off the stairs from time to time? Your backpack is comfortable; It is inconvenient to carry boxes up and down; Look at your physical strength. Are you weak or a suitcase? After all, no matter how light the backpack is, it will be the same for a long time. Then you can check it and take a small bag with you, like this. Backpack, also known as "rucksack", is a kind of luggage with one or two shoulder straps that can be hung on the back of human body. From the use of modern marching loads, it has developed into a modern backpack. Although the structure and materials have been improved, the main structural systems are still shoulder straps and luggage bags. Because it is difficult for humans to carry heavy objects with only two hands for a long time, backpacks are often the first choice for carrying or carrying heavy objects. According to different applications, outdoor activities, such as walking, mountaineering, hiking, traveling and cycling, or daily shopping and school, etc. It will be very comfortable and light when using the backpack. When carrying loads, such as goods transportation, camping, marching, etc., the design of the backpack used will be different, such as using more breathable materials, adding a support frame on the inside to transfer the weight to the hips, or filling the shoulder straps with fillers to reduce the pressure on the shoulders, and wearing a belt. Early suitcases were made of wood or other heavy materials. With the popularity of air travel, the material of luggage tends to be lighter hard plastic or cloth. Most models are also equipped with a built-in small wheel, which can be easily pulled with a pull rod. In recent years, four-wheeled luggage has also appeared, which can not only rotate 360 degrees, but also be easily pushed on the flat ground. In addition, luggage can also be divided into hard-shell luggage and soft-shell luggage according to the shell. Hard-shell suitcases are more resistant to falling and suitable for suitcases that need more protection. Soft-shell luggage is usually lighter and more flexible than hard-shell luggage. However, the zipper position of soft-shell suitcase is easy to burst because there are too many objects inside.