a hand grip for use on a handle of an assistive mobility device or a bicycle has a body and an integral fin . both are designed to damp vibration and reduce the force experienced by a user &# 39 ; s hand . this is accomplished by using different thicknesses of an elastomeric material in the structural layer of the hand grip and by designing the fin to flex . the grip is covered with a soft elastomeric outer layer that provides additional cushioning .