1.Soft back knapsack (Soft Packs/Day Packs) :

Size of this kind of knapsack is basically medium, small-sized, and without bracket of any inside and outside, did not bear a system goodly, of the back when shopping just like you the sort of.

Advantage:

A is more cheaper than old blanket roll, and convenient use B is lighter, volume is minor

Defect:

A is right for Sunday run, the size is too small B is relatively simple bear a system to cannot bear bigger negative charge, the back rises uncomfortable

　　2.Support arm knapsack (External Frame Backpacks) :

The bag is worn outside once unify is outdoors the world of old blanket roll, had seen rarely now. The metal that there is look of a H outside this kind of bag is worn, photography case can be registered outside, the appliance of furnace and so on. This kind of knapsack has very firm outside support, the favorable effect that prop up is having between knapsack and your shoulder and hip. Weight partakes between the evener shoulder in you and hip, make bear more comfortable. Knapsack and bear a system (belt of adjustable aglet, chatelaine, bosom) all secure the frame in knapsack to go up.

Advantage:

A is in evenness or difficulty walk in the journey of moderate relatively comfortable;

Size of B knapsack interior is larger, most baggage can be put within the bag. Have interval and side package, make the classify of article is deposited more convenient;

C compared with inside bracket knapsack, there is larger space between the body and knapsack, make there is better air convection between the body and knapsack, maintain when bearing cooler, comfortable;

D compares same size inside bracket knapsack comes cheaply.

Defect:

A compares same size inside bracket knapsack bulk wants big, and more cumbersome.

B is fully loaded with when the bag when, the knapsack heart of support arm is higher, be below the condition with road poor condition is relatively dangerous. Go up in need ascend or the road that are ski especially.

3. Inside bracket knapsack (Internal Frame Backpacks) :

The bag is worn inside now basically forestall the market of old blanket roll, numerous manufacturer also exhibits skill each in this domain. This kind of knapsack moves bracket to knapsack interior, the be in harmony that makes bracket and knapsack more close together is an organic whole. At the same time better also in you weight shoulder is mixed undertake allocation between hip.

Advantage:

The clingy body with A more comfortable knapsack, make core stabler;
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