CamelBak Men's Asymetrix 15 2.1-Liter Hydration Pack Combination hydration/cargo pack with 2.1-liter Omega reservoir Easy-to-fill, insulated reservoir keeps liquids cool for hours Includes removable 2-liter UnBottle with hydration pocket; 915 cubic inches of storage Dynamic suspension harness maximizes load stability; ventilated back panel Includes rain cover, pole holders, and bite valve cover; 2-year warranty