CamelBak Ambush AB 500 100oz, Digital Desert 3.1 liter (102 fl.oz.) BPA-free hydration reservoir with easy-to-fill wide-mouth opening and Quick Link system for easy removal and quick filling Closed-cell neoprene tube cover helps keep liquids cool or warm Big Bite Valve with cover self seals after each drink Direct Armor Attachment System with Pressure Strap allows for easier on-the-move hydration Made in United States of America