The Source Hydration System water bladder is built for hydration packs and backpacks. It provides a pure water taste, requires minimal maintenance, and offers maximum reliability and durability. Available in both 2L and 3L, the hydration bladder creates a platform for further customization with unrivaled accessories and compatible packs. Comes with Storm Push-Pull Valve.2L Dimensions: 14.5 x 6.9 x 3.2 in3L Dimensions: 16.1 x 8.2 x 4 inTube Length: 37 in