Hydration for day trips or longer expeditions this vango 2 litre bladder fits into your hydration system compatible pack for easy drinking on the move and no nasty taste dofe recommended kitperfect for trekking climbing and duke of edinburgh award expeditions this vango hydration bladder has an easy fill wide opening and large 2 litre capacityantibacterial material stops mould forming and prevents any nasty tastes or smells from forming the next best thing to fresh wateractivityhiking