Combining `souplesse`, speed and control at the highest level into the most advanced tire Schwalbe has ever created Smooth tread road race tire with light should siping from improved control and new Addix Race compound for unmatched control VGRD - V-Guard is an extremely cut-resistant hightech fiber makes it possible to ensure an extraordinary high level of puncture resistance even on very light tires RACE - Addix race multi-compound designed for ultra-light weight and low rolling resistance for the best possible performance in race circumstances SRACE - Super Race, three carcass layers on the sidewalls and two carcass layers in the middle under the tread, reinforced with a thin Raceguard puncture protector