The Evoc Hydro Pro Hydration Pack 1.5L + 1.5L Bladder sits firmly on your back while you get all the action. Your jersey pockets remain easy to reach and the weight of provisions and gear are evenly distributed in the spacious chest compartment.Evoc Hydro Pro Hydration Pack 1.5L + 1.5L Bladder Features1.5L hydration bladder included2 Nutrition compartments for bars or 150ml liquid/gel eachChest pockets for gear you need to have quick access too while ridingCapacity - 1.5L (0.2L chest pockets, 1.3L rear pack)Weight - 230 gDimensions - 23 x 33 x 2cmMaterial - N210 D TAFFETA, 3D AIR MESH, AIRO FLEX More info