• nylon
• Camping -- great for survival, backpacking, hiking, camping, trekking and any other exploration,waterproof backpacks for adults
• Dry bag backpack-- no odor for nice sleeping experience,outdoor
• Backpack for camping-- foldable and for convenient storage with drawstring bag container supplies,travel daypack
• Waterproof travel backpack-- long enough for adults to keep warm, can can be freely adjusted, for cold weather
• Duffle backpack for travel-- comfortable, anti-splashing water, and lightweight,backpack for travel