Tested in the wind tunnel, in the lab, and on the road: Elevates road bike tires to a new level with its aerodynamics. A total of 20% less aero resistance than the Pro One TT (measured at 45 km/h and 28mm tire width) due to a specific front tire contour. Very good puncture protection thanks to RaceGuard. Optimized for modern & wider rims > 21mm internal width. Manufactured with recycled carbon black (rCB) from Schwalbe's own tire recycling.