1.500D Nylon 2.Imported 3.[ Tactical Hydration Backpack]The hiking water storage pack has 5 colors for you to choose: Coyote Brown, Multicamo, Multicamo Black, Black, Green. And the pack size: 11 x 6.3 x 3.6 inches (L x W x H), which is compatible with most hydration bladder, and comes with 2 tube opening through the top of hydration backpack, allowing you to hydrate at any time. It will be the outdoor accessories for hiking, cycling, mountain climbing, running, and other outdoor sports. 4.[ Hydration Bag]Keeping hydrated is very important during exercise or outdoor sport activities. This hydration bundle pack can hold a 2 liter water reservoir. In addition, the water backpack has a large main pocket, a pouch and 2 front pockets, which is enough to store phone, wallet, keys, knife, multi-tool or any other thing you need. 5.[Molle Webbing & Straps]The hydration backpack has MOLLE webbing on the back & buttom sides for accessory and gear attachments, and two adjustable quick snap straps of the back that can attach to any MOLLE webbing system. Besides, the front of running hydration backpack has quick release buckles, smooth YKK zippers and Hook and Loop, which make it very easy to use. 6.[500D Material Hydration Backpack]The Molle Hydration Backpack is made of 500D Nylon material with high durability, wear resistance, waterproof and quick-drying fabric. The hydration water bag suitable for 2L water bladder has nylon webbing handle, YKK rope zipper, sturdy tough buckle, magic sticker panel, which is suitable for hiking, running or climbing.