Helps support and limit the motion of the thumb (Metacarpophalangeal or MCP Joint). Allows for full finger movement. Provides warmth to the thumb area and joint. Ideal for use on soft tissue injuries, ligament strains, gamekeeper's thumb, osteoarthritis, and degenerative joint disease.Protected by the AEGIS Microbe Shield controls or eliminates odors, unsightly stains, and product deterioration caused by the growth of bacteria and microorganisms.