The Aero TT System offers 50% less drag than round bottles, saving up to one minute in an Ironman and up to 20 seconds off of a 40km TT/Tri.Special XLAB Hi-Grip Deep Pocket cage holds the water bottle secureIncludes 20oz, BPA-free water bottle with easy grip texture and grooveTotal System Weight: 119gItem SpecificationsOunces20fl oz