The durable hydration bladder for backpacks contains no BPA or PVC. The easily-detachable hose and valve increase water flow by 20%.Evoc Backpack Hydration Bladder 3LFeatures:Slide-Seal™ Top with Tether36” HydraFlex™ TubeBlaster™ Bite ValvePlug-N-Play™ Connect SystemRemovable Pack ClipSilicone LubricationBasic Care & Use Instructions3L 140g, 18 x 42 cm
Best Price: £37.99 from Leisure Lakes Bikes