* Optimized for maximum aerodynamic efficiency with the 303 SW* Dependable puncture protection and durability for high-performance road riding and racing.* 30c is the fastest on smooth paved roads at higher speeds. * 35c is ideal for rougher pavements or even light gravel* Measures true to size: 30mm or 35mm on 303 SW* Tubeless Complete, carbon beads* Dynamic: UHP Compound* R:Shield 120 TPI* SRAM Model ID: TI-GY-VRSW-A1