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. Teton Oasis 18L Hydration Backpack with 2L Bladder Purple - Technical Packs at Academy Sports