Lightweight, versatile, and reliable, the Purgatory CONTROL 2Bliss Tire makes a solid options for trail riding. In this iteration Specialized updated the tread, giving it square lugs that bite hard in soft soil, but still ride smoothly over hard-pack. Flexible center sipes fold out when you brake, giving you increased ground contact and adhesion, while proprietary GRIPTON holds fast whether the soils is wet or dry.