① According to the load out time and the number of items selected volume of the backpack
If the travel time is short (1 to 3 days), and not for outdoor camping, carrying small items, easy to select the small volume of the bag, generally 25 to 45 liters is enough. This backpack is usually relatively simple structure, no external plug or less established, but one of the main bag, but usually with 3 to 5 with bags, easy to load the goods classification.
If the longer travel time (3 days) or need to carry camping equipment, will have to choose a large bag, 70 liters of 50 l and appropriate. For many, or carrying bulky items, optional 80 + 20 liters more large backpack or plug-in package.Waterproof backpack for outdoor travel shipping hiking and clibming
② According to the motion method and the use of backpack choose the type of backpack
Is climbing the same package, its use is not the same, such as: activities designed specifically for rock climbing rock climbing package, generally do not design hardware support, as is easy to carry and deformation, while plug-in points are more convenient to fly equipment, some models equipped with a special mattress, finishing equipment.
The design of the bike for the cycling family package, to focus more on the riding characteristics, suitable for riding sports, specifically the back row can be divided into packets, frame bag, prior to the package, dual hanging back pack, pack bags Transparent camera waterproof dry case camcorder waterproof cases for swimming diving outdoor gear.
General mountaineering bags, also known as camping backpack, designed to take into account the characteristics of various forms of exercise and the need for long-distance travel for climbing, exploring and woodland across the activities.
There are designed specifically for long-distance travel bag, saying it was more or LASH package with the package, the overall structure similar to the basic and mountaineering bags, can be shoulders back, upper and lower layers, and similar to the suitcase, exposing cover-type openings, can be a single shoulder, also horizontal, vertical begin a new line. Siamese size packaging structure can be combined can be divided into easy to use, popular with business travelers welcome. All kinds of backpack has its own unique scope, the best choice for the post-purchase package package-specific.
③ According to the figure chosen to bear the size of the system
Backpack suspension system has a specific scope of application of adjustable backpack, although large, is not without limits. Buy backpack carrying system, the size of selected is very important. What size is appropriate to it? Generally, the force point of the waist pack should be on the flank above the coccyx. The fulcrum of the shoulder strap should be slightly below (10 cm is appropriate), so as to facilitate the adjustment of the force with and force it back up and comfortable. Fall over the General Assembly have to bear a sense of size, otherwise there will be on the vertical sense, so that the waist Shouli Bu in place, the right size adjusted, the pack will naturally attached to the back, very comfortable.
④ quality of the material can not be ignored
Many people choose a backpack, they often pay more attention to color and shape of the backpack. In fact, the key to durable backpack depends on whether the materials. Point of view from the ribbon, the ribbon general ribbon price and quality can be poor in 3 to 5 times, high quality nylon webbing of the loading capacity up to 200 kg.
Differ greatly from the material point of view, the same fabric as the 420D, the general fabric weight 280 grams per yard, while the high-density fabric weight 410 grams per yard, so the two fabrics from the strength and durability will have a big difference . Friction machine in the destructive testing of fabrics, the same as the 500D fabric, nylon fabric common to the 1075 rpm and damaged, and DuPont nylon turn in 3605 when damaged, the abrasion resistance three times as nylon.
From the coating point of view, low-grade multi-purpose PVC coated bag, which will harden in the cold, and high-end multi-pack PU coating fabrics, the cold hardness of the case did not change significantly, four waterproof PU coated fabric over the degree of up to 1500mm . Brand bag on the market today are more sophisticated in the selected materials, the performance quality are better.
⑤ good structure and design to ensure superior performance backpack
Good performance mountaineering bag carrying comfort reason, the important factor is that it is scientific and reasonable design structure. Good design not only gives the overall beauty, more importantly, allows you to use to get great enjoyment. We backpack from the BIG PACK TOP design can be more intuitive to see this.
The absorption of Nepal backpack carrying system architecture principles, using a double "V" design, one lined with aluminum frame was "V" shaped, to set up a dash in the shoulder position, and under the curve of the aluminum frame body for positioning processing, the user can fine-tune according to their body. Second, the backpack was loaded part of the "V" shaped, wider at the top, under the thick thin, was installed after the basket-type thing. This force structure is more easily passed.
TOP series of backpack use of ETA-3 adjusting device, the device is equipped with a structural liner, adjust the department has three holes to adjust the position of holes can change the bear's size. Change the structure of the pad position can move up and down the center of gravity backpack waterproof bag.
TOP backpack also designed a series of increasing volume of the device, the vertical design of a compatibilizer type of backpack raised some catchy, after rising about 10 liters capacity increase can backpack. Horizontal transfer in the main bag type backpack with two vertical zipper, the bag after opening thicker thus expanding the volume, especially for larger items installed. Users need to self-adjust according to its high, its width, with such a bag would have added a lot for your travel convenience.
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