Z Adventurer Hunting Backpack Military nylon fabric material-water-proof,abrasion resistant and Highly Tear Resistant. High strength nylon rope umbrella with high strength buckle and top quality YKK zipper. All materials are avirulent environmental protection material. Equipped with back shell type filling, need not frame,Scattered back pressure to prevent dispersed backpack sliding. MOLLE syestem design can hang others MOLLE bags.