Notizia
Are behind-the-saddle bottles aero? Yes, when they sit in the right place. In AeroGain's 25-rider velodrome test at 45 km/h, two bottles held wide and high behind the saddle made riders faster than riding with no bottles at all: a median of 5.3 W with the Aero BTS PRO and 5.0 W with the Aero BTS.