Tire Selection for Pros in the Peloton for Cobblestones and Rough Asphalt Tracks Proven cotton casing material, packaged in a revolutionary new construction process, forms the foundation for the new standard in road tires with racing performance. Combination of silica and graphene mix ensures speed, confidence, and grip on cobblestones and rough asphalt. Ultimate smoothness and comfort. New tread design with lateral herringbone structure for better handling in curves. Tubeless-Ready (TLR) tires starting from 28 mm are TSS (HOOKLESS) compatible. Maximum pressure 72 PSI / 5 Bar.