1.outer fabric,such as:oxford fabric 600D with pvc coating,nylon fabric 420D or 1000D coredural with pu coating.
2.buckle
choosing 2 slide buckles for shoudler strap,
3.zipper
4.zipper puller
5.reforcement fabric,
6.inside foam
7.nylon or polyester 300d binding.
8.webbing
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