Provide dual layer technology with a vibration damping inner core for riders using thumb throttles Outer gel layer provides a very tacky surface that is easy to hang on to Small flange that protects your hand, and a closed end cap to keep out water, snow and mud These motorcycle handlebar grips have dual layer technology with a vibration dampening inner core for smooth driving. An outer gel layer has a tacky surface that is easy to grip. A small flange protects your hand from flying debris.