Check the listing for details. CamelBak Maximum Gear Cordura Thermobak 2L Hydration Pack Backpack No Bladder. Color: Black, Condition: Pre-owned. Listed at 19.99 USD. Brand: CamelBak Type: Maximum Gear hydration backpack carrier designed to hold a water reservoir (not included). Color: Black. Materials: Durable nylon shell with fabric lining, webbing straps, and plastic hardware and buckles. Details: Front CamelBak Maximum Gear logo patch, top carry handle, adjustable shoulder and waist/sternum straps with side-release buckles, circular port for routing a drinking tube, rear snap-closure opening for inserting and removing the hydration bladder, and bottom drainage grommet. Size: One size hydration backpack intended for adult use. Suitable for: Hiking, backpacking, tactical or field use, trail running, cycling, and other outdoor activities requiring hands-free hydration.