Hydrobak light 50oz hydration packa durable, ventilated and adjustable construction, alongside a cruxreg reservoir and plenty of space for your gear make the camelbak hydrobak light 50oz hydration pack perfect for any adventure.the camelbak hydrobak light 50oz hydration pack ensures all your essentials are close at hand when you are out riding. Boasting a lightweight and durable design, it features a 1.5 litre reservoir capacity alongside a 3d mesh back panel, ventilated harness and adjustable sternum strap for optimum comfort. Additionally, a secure zipped pocket, integrated helmet loop and reflective detail offer plenty of space for snacks and extra kit as well as keeping you safe in low lit environments.featureslightweight and durable materials1.5 litre 50oz cruxreg reservoir quicklinktrade system3d vent mesh back panelventilated harnessadjustable sternum strapsecure zipped pocket helmet carryreflective detailtotal capacity 2.5 litresweight 170gfits torso 38 53cm 15 21 inchesbuy camelbak hydration systems from chain reaction cycles, the world's largest online bike store.