A covering (often rubber or foam) on a handle, designed to allow the user a more comfortable or more secure hold on the handle
{i} handshake, grasping and holding of hands by two or more people (customarily done in greeting or parting); handle by which an object is held
the appendage to an object that is designed to be held in order to use or move it; "he grabbed the hammer by the handle"; "it was an old briefcase but it still had a good grip"