Fast-rolling like Terra Speed, with larger shoulder tread for control on technical terrain. Confident cornering anywhere. Complex gravel tread pattern design to master gravel and natural trails PureGrip Compound: Derived from an activated Silica compound to do exactly what it says; offer exceptionally good grip and durability ShieldWall: Light, flexible tire with all-round protection for low rolling resistance E25 e-bike rating features a high quality structure with puncture protection to reduce premature wear brought about by the additional driving force