A leak-proof and efficient hydration reservoir from CamelbakOffers 20% more water per sip - increased hydration efficiencyOpen and close cap - with leak proof sealingOn/off lever - seals drinking tube with easeHydroguard technology - inhibits the growth of bacteriaBig bite valve - eliminates dripping from mouth pieceCapacity: 2LRecommended activity -cycling / walking / hiking More info