Different types of backpack

The volume of large backpack is more than 50 liters, which is suitable for medium and long-distance travel and professional exploration activities. For example, when you want to go to areas such as Tibet for long-distance travel or Mountaineering exploration, you should undoubtedly choose a large backpack with a volume of more than 50 liters. For some short and medium-term trips, if you need to camp in the wild, you also need a large backpack, because only it can hold the tent, sleeping bag and sleeping mat you need for camping. According to different purposes, large backpacks can be divided into mountaineering bags and backpacks for long-distance travel.

The climbing bag is generally thin and long, so that through the narrow terrain, the bag is divided into upper and lower layers, separated by a zipper interlayer in the middle, which is very convenient for taking and placing articles. The side and top of the backpack can be tied with tents and cushions, which virtually increases the volume of the backpack. There is also an ice pick cover outside the backpack, which can be used to bind ice picks and snow sticks. What is most worth mentioning is the back structure of these backpacks. There is a light aluminum alloy inner frame supporting the bag body. The shape of the back is designed according to the principle of ergonomics. The strap is wide and thick. The shape adopts the "s" design in line with the physiological curve of the human body, and there is a chest strap to prevent the strap from sliding to both sides, which makes the backpacker feel very comfortable. And all these backpacks have a strong, wide and comfortable belt, and the height of the belt can be adjusted. The user can easily adjust the strap to suit his height according to his figure. Generally speaking, the bottom of the backpack is above the hip, which can transfer more than half of the weight of the backpack to the waist, so as to greatly reduce the burden on the shoulder and reduce the shoulder damage caused by long-term weight-bearing.

The bag structure of the long-distance travel backpack is similar to that of the mountaineering bag, except that the bag body is wider and equipped with many side bags to classify and place the odds and ends. The front face of the long-distance travel backpack can usually be opened, which is very convenient for taking and placing items.

The volume of medium-sized backpacks is generally between 30 ~ 50 liters. These backpacks are more widely used. Medium-sized backpacks are most suitable for 2 ~ 4-day field travel, travel between cities and some long-distance non camping self-help travel. You can carry your clothes and some daily necessities. The styles and types of medium-sized backpacks are more diverse. Some backpacks add some side bags, which is more conducive to sub packing items. The back structure of these backpacks is roughly the same as that of large backpacks.

The volume of small backpacks is less than 30 liters. These backpacks are generally used in cities. Of course, they are also very suitable for 1 ~ 2 days of outing