New! TETON SPORTS Oasis 18L Hydration Backpack, 2L Bladder 。Pack your hiking essentials in the Teton Oasis 18L Hydration Backpack with 2L Bladder. The 210-denier 2-millimeter polyester honeycomb ripstop fabric affords durability, while the spacious main compartment fits hydration bladders up to 2 liters. The adjustable, contoured padded shoulder straps allow for comfortable carrying, and the cushioned bite valve helps prevent leaking. Features and Benefits 210-denier 2-millimeter polyester honeycomb ripstop fabric affords durability Spacious main compartment fits 2-liter hydration bladders Front and side pockets Adjustable, contoured padded shoulder straps allow for comfortable carrying Adjustable chest and waist Anti-shock chest strap with safety whistle Bungee shock cable storage Reflective trim and accents enable visibility Cushioned bite valve helps prevent leaking