If the travel time is short (1 to 3 days), and does not intend to outdoor camping, carrying small items, easy to select the small volume of the backpack, usually 25-45 liters is enough. This backpack is usually relatively simple structure with no plug-ins or less based plug-ins, in addition to a main bag, the usually located 3 to 5 attached to bags, easy to load goods classification.
If the longer travel time (3 days) or the need to carry camping equipment, and will have to select a large package to 50 liters of ~ 70 liters is appropriate. For many, or carrying objects larger, optional 80 +20 l oversized backpack or a plug-in more packages.
② According to exercise the use of selection methods and backpack type of bag
Mountaineering 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 and push for the ease of deformation, while plug-in points are more convenient suspension equipment, and some models a special assembly of the finishing equipment Dianbu.
Riding a bicycle designed for the family package, with greater focus on the riding characteristics, suitable for riding sports, concrete can be divided into back-line package, rack Bag, before bags, dual-purpose back hanging bags, pack bags, etc. .
A general sense of the mountaineering bag, can also be called camping backpack, designed to take into account a variety of movement forms of the characteristics and needs of long-distance travel for mountaineering, adventure and forest through activities.
There are specially designed for long-distance travel backpack, called multi-purpose package or picture-package, its overall structure similar to the basic package with the mountain can be shoulders back, upper and lower layer, but also similar to suitcases, exposing cover-type openings, can be a single shoulder can also be horizontal, vertical begin a new line. Size of the packaged piece structure and can be combined can be divided into easy to use and very popular among those who welcomed the mission. All kinds of backpack has its own unique scope of application, the best option to buy packages to make special package specific.
③ According to the figure chosen to bear the size of the system
Backpack carrying system has a specific scope of application of adjustable backpack while a larger scope, nor is it without limits. Buy backpack carrying system, the size of selected is very important. What kind of size is desirable in it? In general the force point of the waist bag should be above the flank on the coccyx. The fulcrum of the shoulder straps should be slightly lower (10 cm is appropriate), thus making it easy to adjust belt force and force it back up and comfortable. Carry sizes over the General Assembly created a sense of falling, and vice versa will be on the vertical sense, so that the waist Shouli Bu in place, the appropriate adjustment of a good size, the bag will naturally attached to the back, very comfortable.
④ quality of the material can not be ignored
Many people choose backpacks, they often pay more attention to backpack the color and shape. In fact, strong and durable backpack depends crucially on whether the materials. From the ribbon point of view, the ordinary and high-quality ribbon ribbon price difference can be 3 to 5 times, high-quality nylon straps load force can be up to 200 kg.
Also differ greatly from the material point of view, with the 420D fabric, ordinary fabric weight 280 grams per yard, while the high-density fabric weight 410 grams per yard, the two kinds of fabrics from the strength and durability, there will be quite different . In the friction machines to conduct destructive testing of fabrics, with the 500D fabric, nylon fabric common to the 1075 rpm breakage, while the Dupony Rombout turn in 3605 when damaged, its durability as an ordinary nylon of three.
From the coating point of view, multi-purpose PVC coated low-grade backpack, which will harden by cold, while the high-grade multi-purpose backpack PU coated fabric, the case of the cold hardness of no significant change in the four degree of PU-coated fabric waterproof up to 1500mm above . Brand-name backpacks currently on the market are more elegant in the selected materials, the performance quality are better.
⑤ good structure and design is a guarantee of superior performance backpack
Good performance, comfortable hiking bag carrying the reason, it is important factor lies in its scientific and rational design of the structure. Good design not only gives the whole United States, more importantly, allows you to use to get great enjoyment. We have BIG PACK TOP series of backpack design can be more intuitive to see this.
System structure to absorb the carrying basket carried on the principles of Nepal, using pairs of "V" design, one lined with aluminum frame was "V"-shaped, set up a colored bars in the shoulder position, and in accordance with the body curve of the aluminum frame for positioning processing, the user can fine-tune according to their own bodies. The second is part of the backpack load was "V"-shaped, the width under the narrow, thick, under the thin, was installed after the basket-type material. Such a structure is easier to force to pass.
TOP series backpack using ETA-3 adjustment device, device equipped with a structural liner, adjust the department has three holes to adjust the location of perforation can change the size of carry. To change the structure of padded backpack's center of gravity location can move up or down.
TOP series backpack is also designed to increase the volume of the device, vertical-type compatibilization catchy design a raised part of the backpack, after rising about 10 liters capacity increase will enable backpack. Horizontal transfer-type backpack bag in the main shaft with two open zipper, backpack thicker after the opening can thereby expanding the volume, especially for loading bulky items. Users can self-tuning needed for its high, its width, with such a bag will increase the number of your travel convenience.