DAKINE Amp 18L Hydration Pack - 1100cu in Volume: 1100 cu in Dimensions: 19 x 10.5 x 8 in Reservoir Volume: 3 L Pockets: 2 mesh side, 1 fleece-lined padded phone, 1 fleece-lined sunglasses, 1 pump, 3 internal, 1 front zip Material: 630D nylon, 70D nylon