Our S-Works Terra Tubular is the tire of choice for cyclocross purists, as it's designed for grip and speed in the muddiest of conditions. It has sharp edged, deep knobs in an aggressive pattern that carve into the ground. Center knobs offer brilliant steering and less rolling resistance while transition knobs work like a paddle for excellent acceleration. Tall shoulder knobs slice through the mud and offers superb cornering grip. There is proper distance between knobs for enhanced self cleaning. The S-Works Terra features our GRIPTON® compound that stays soft and supple when Mother Nature turns on the A/C.