An efficient and effective way to stay hydrated on long treks and hikes. The Hydraulics Reservoir provides a hands-free way of staying hydrated, so you????????re able to use your hides for the more important outdoor tasks. Designed for use with Osprey packs, this BPA-Free hydration packs holds 3 liters of liquid, and weighs 5.6 oz. so it won????????t weigh you down when you hit the trails. . ????. . . . . . Metallocene, polyethylene. . BPA-Free. . PVC-Free. . Holds 3 liters. . Three-quarter-turn wide-mouth opening. . Super lightweight. . Hydrostatic backer plate prevents sway. . Magnetic bite valve with sternum strap magnet attachment. . Weighs 5.6 oz.. . Dimensions are 14 in. x 8 in. x 2 in.. . Imported ????. .