The Speedster was designed for rolling speed and minimal drag on hard pack or paved terrain The Speedster was designed for rolling speed and minimal drag on hard pack or paved terrain E-bike approved version features a 120 TPI and tubeless ready construction Bomb Proof models feature Aramid belting, Dual Control Compound for superior grip and a higher TPI casing for a durable responsiveness DCC - Dual Control Compound features two kinds of materials for speed and control, hardness of 56A in the center and a lower 48A on the sides *Please note that EBike rated tires also can be used with non-Ebikes and are generally more durable than standard tires