The CamelBak Unbottle Reservoir frees you from your water-bottle routine with full integration into a hydration-compatible backpack. High-flow technology in the Crux reservoir make it more efficient than anything else on the market, delivering 20% more water per sip. On and off lever makes it easier to prevent leaks. Use the Quick-Link system to quickly customize your reservoir with optional accessories, including CamelBak Antidote filters, insulated tubes and flow meters. Ergonomic handle promotes easier refilling. Insulated reservoir sleeve keeps cold water chilled. Secure the reservoir using the built-in attachment points. Hanger loop for easy hanging. Zippered tube access for easy removal. Crafted of 700-denier diamond nylon ripstop and 420-denier nylon plain weave. Manufacturers lifetime warranty. Type: Hydration Packs.