When riding, the whole backpack buckle in back, riding back if not ventilated, wet sticky sweat on the back cover that will be quite uncomfortable. Backpacks increase a mesh resin plate, isolation back and inclusions. Ward riding pack straps and lumbar pad the inside with a 3D breathable mesh design, to a flow of air space, effectively maintain body contact area dry.
Backpacks are usually the main bag, side bag, with bags and other accessories. Riding packages will be made relatively small, usually no more than 30L, are generally 10L, 14L, 18L, 20L, 25L and the like. Therefore, through each part of the backpack bag design, you can better allocate objects, rational use of capacity, of course, more importantly, easy to pick up.