The Podium 21 oz. Bottle by CamelBak has an innovative design for high performance hydration., redefining the bike bottle for serious cyclists. No more bite open, hip slap shut. Revolutionary valve lets you sip from any direction or squirt to cool off on long rides. High flow rate squeezable sides for increased water flow. Self sealing Jet Valve eliminates spatter on your frame or jersey. Positive shut off for leak proof transport..to fill with ice and water and a breeze to clean Made of polypropylene with HydroGuard. Size: na Weight: 2.5 oz. Capacity: 21 fluid oz.