The Roamer is ready for anything from your daily commute a trip to the store or a long weekend of touring the back roads. KI - Kelvar Inside Kevlar belting beneath the tread. SW - SilkWorm increases puncture and tear resistance with a reinforced breaker beneath the tread surface. DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners. B2B - 2 ply nylon breaker beneath the tread surface made for road tires. EBIKE - has achieved a passing rating for use with E-Bikes up to 28mph and is ECE-R75 approved. *Please note that EBike rated tires also can be used with non-Ebikes and are generally more durable than standard tires