Proven in the Tour de France by Saur Sojasun the RACE A Tubular is the ultimate Japanese handmade top end tubular tyre that features the best in tyre technology for the elusive combination of speed & reliability: • ZSG Dual Rubber Compound • PT &40; Puncture Technology&41; breaker • Internal Butyl R-Air Tube • Inner flap for protection against wheel rim 700 x 23c / 280 grams