Vittoria Corsa Pro Speed Tire - 700 x 28 Tubeless Folding BLK/Para Race Graphene G2.0Designed specifically for time trial and triathlon Combines the Graphene + Silica compound, ultra supple cotton casing, and updated tread pattern, all electrically cured to minimize rolling resistance. The results of internal testing show an improvement in rolling performance of 5%, with 2% savings in weight Lightweight cotton and durable aramid, spun in a 320 TPI casing that combines the formers intuitive, supple road feel with the latters puncture