Abstract: An adjustable collar for attachment around a handle such as the handle of a baseball bat. The adjustable collar has a rubber-like strip which has a strap affixed to its outer face. The strap extends past the rubber strip and has a ring at one end and a free end at the other end. The rubber-like strip is pressed against the place on the handle where it is desired to be attached and the free end is passed through the ring and is looped back toward the free end and affixed to the strap by a hook and loop fastener or other removable fastening structure.