Prime aero tt bottle and cage kitkeeping you hydrated on race day, this bottle and cage kit allows you to enjoy convenient access to your water without adding any unnecessary weight to your tt bike. It features a stiff carbon cage construction, which allows you to benefit from its excellent strength to weight ratio. Prime has also made its cage system as aerodynamic as possible, which takes vital seconds off your finishing time as well as up to 50% less drag when compared to traditional round systems. 1x carbon bottle cage, 1x small bottle and 1x large bottle included in package. Features material carbon cage, system made from taste free bpa free polyethylene 50% less drag than round bottles system weight 100g cage weight 33gbuy prime components from chain reaction cycles, the world's largest online bike store.