Tri flat pro saddle the tri saddle is compact feature rich and designed specifically for triathletes and time trialists with integrated bottle mount and a central pressure relief channel that also acts as a drain for swim water carbon rail not suitable for off road use flexible nylon base micro fibre bonded cover flat profile profile when it comes to riding styles aero means flat the flat profile is for riders who get low to cheat the wind flat out in every sense less weight on the sa