??Select the capacity of the backpack according to the time of going out and the number of items to be loaded
If the travel time is short (1~3 days), and you are not going to camp outdoors, and you have not many items to carry, it is easy to choose the small one. The volume of the backpack, generally 25 to 45 liters is enough. This kind of backpack is usually relatively simple in structure, with no or less external hangings. In addition to a main bag, there are usually 3 to 5 additional bags, which are convenient for sorting and loading items.
If you travel for a long time (more than 3 days) or you need to bring camping equipment, you need to choose a large bag, 50 liters to 70 liters. If you need to load a lot of items or a large volume, you can choose an 80+20 liter oversized backpack or a bag with more external storage.
??Select the type of backpack according to the mode of exercise and the purpose of the backpack
The same is a mountaineering bag, but its uses are different, such as: a climbing bag specially designed for rock climbing activities, generally No hard support is designed, in order to be easily deformed with you. At the same time, there are many external hanging points, which are convenient for hanging equipment. Some styles are also specially equipped with pads for finishing equipment.
The bicycle series bags designed for cycling pay more attention to the characteristics of cycling and are suitable for cycling sports. Dual-purpose bags, pant bags, etc.
A general mountaineering bag, also known as a camping backpack, is designed to take into account the characteristics of various sports forms and the needs of long-distance travel, and is suitable for mountaineering, adventure and woodland crossing activities.
There is also a backpack specially designed for long-distance travel, which is called a multi-purpose bag or a child-mother bag. Its overall structure is basically the same as that of a mountaineering bag. The box, with a cover-type opening, can be carried on one shoulder or carried horizontally or vertically. The size packaging has a conjoined structure, which can be divided and combined for easy use, which is very popular with business travelers. All kinds of backpacks have their own unique scope of application. The best choice for purchasing bags is to use special bags.
??Choose the size of the carrying system according to the body shape
The carrying system of the backpack has a specific scope of application. Although the adjustable backpack has a large scope of application, it is not unlimited. It is very important to choose the size of the carrying system when purchasing a backpack. What size is suitable? Generally speaking, the stress point of the waist of the backpack should be on the waist socket above the coccyx. The fulcrum of the shoulder strap should be slightly lower than the shoulder (10 cm is appropriate), so as to facilitate the adjustment and stress of the force belt
, and it is comfortable to carry. If the size is too large, it will cause a feeling of falling, otherwise, there will be a vertical feeling, so that the waist is not stressed in place. After the appropriate size is adjusted, the backpack will naturally stick to the back, which is very comfortable.
??The quality of materials should not be ignored
When choosing a backpack, many people tend to pay more attention to the color and shape of the backpack. In fact, whether the backpack is strong and durable depends on the material. From the webbing point of view, the price difference between ordinary webbing and high-quality webbing can be 3 to 5 times, and the bearing capacity of high-quality nylon webbing can reach more than 200 kg.
The difference is also very big in terms of fabrics. For the same 420D fabrics, ordinary fabrics weigh 280 grams per yard, while high-density fabrics weigh 410 grams per yard. Therefore, the two fabrics are strong and wear-resistant. There will be big differences in degree. The destructive test was carried out on the fabric on the friction machine. The same is 500D fabric. The ordinary nylon cloth is damaged at 1075 rpm, while the DuPont nylon cloth is damaged at 3605 rpm, and its wear resistance is three times that of ordinary nylon.
From the coating point of view, low-grade backpacks mostly use PVC coating, which will harden when cooled, while high-end backpacks mostly use PU coated fabrics, and their hardness does not change significantly when exposed to cold. The waterproofness of the fabric can reach more than 1500mm. At present, the famous brand backpacks on the market are more sophisticated in the materials used, and the performance and quality are also relatively good.
??Good structure and design are the guarantee of the superior performance of the backpack
The reason why a mountaineering bag with good performance is comfortable to carry is that its design structure is scientific and reasonable. Good design not only gives the overall beauty, but more importantly, it can make you enjoy the excellent in use. We can see this more intuitively from the design of the BIG PACK TOP series of backpacks.
The structure of its carrying system absorbs the principle of the Nepalese carrying basket, and adopts a double “V” design. First, the lined aluminum frame is in a “V” shape, and a horizontal bar is positioned on the shoulder. The aluminum frame is positioned according to the curve of the human body, and users can also fine-tune it according to their own body. Second, the loading part of the backpack is in the shape of “V”, which is wide at the top and narrow at the bottom, thick at the top and thin at the bottom, and is in a basket shape after loading. Such a structure is more convenient for force transmission.
TOP series backpack adopts ETA-3 adjustment device, which is equipped with a structural pad, and the adjustment part has three holes, and the position of the holes can be adjusted to change the size of the backpack. Changing the position of the structural padding can move the pack’s center of gravity up and down.
The TOP series backpack is also designed with a device to increase the volume. The upper part of the vertical capacity-enhancing backpack is designed with a raised part, which can increase the capacity of the backpack by about 10 liters after being raised. The horizontal adjustment type backpack is equipped with two vertical zippers on the main bag, which can make the backpack thicker and expand the volume after releasing it, especially suitable for holding larger items. Users can adjust the height and width according to their needs. Having such a backpack will add a lot of convenience to your travel.