Rothco Rapid Trek Hydration Pack. O.L.L.E. Compatible Neoprene Covered Plastic Hose With Bite Valve Bite Valve With On-Off Switch Quick Release Shoulder Straps Sternum Strap Top Carry Handle Zipper Close Bladder Compartment Front Zipper Close Storage Compartment 2 - D Rings At Bottom Loop For Name Tag/Badge Attachment' Specifications for Rothco Rapid Trek Hydration Pack: Manufacturer: Rothco Color: Black Fabric/Material: Neoprene Covered Plastic Hose 600D Polyester Volume: 3 liters Condition: New Features of Rothco Rapid Trek Hydration Pack Material: Neoprene Material Specs: Neoprene Covered Plastic Hose Package Contents: Rothco Rapid Trek Hydration Pack Rothco Rapid Trek Hydration Pack Black 2865-Black