VISION BTCG TRIMAX Rear Hydration System V17Description Made to fit any type of saddle, the Vision Trimax rear hydration system can suit any need. With the option to mount two extra high grip cages, no rider will go thirsty whether its in a race or riding with friends. Features Modular saddle drink system universally fits both traditional and snub nose saddles Multiple mounting and lashing points can be customized for water bottle, CO2 pump, accessory bag, and tie strap combinations 3 position