upport 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, gatekeeper's thumb, osteoarthritis, and degenerative joint disease.Manufacturer Contact Information800-356-9522 Breathable fabrics for extended wear and fabric treated to prevent odor. | Three adjustable straps for custom fit | One Size Fits Most, measure around the wrist: 5.5" - 10.5" | Limits the movement of the thumb (metacarpal bone), but allows complete movement of the fingers. Ideal for use in case of injuries to the thumb joint, thumb sprains, “Skiers Thumb”, and osteo-arthritis | Composition: POLYESTER 39%, NYLON 24%, PP 11%, RECYCLED PET 9%, SPANDEX 5%, PU FOAM 5%, TPU 4%, PU 3%