Whilst providing full finger function, this very low profile wrap around support provides adjustable support for the thumb CMC joint in the treatment of osteoarthritis and medical subluxation. The shaped strap wraps around the thumb CMC joint and the first metacarpal for targeted CMC joint support. An extensive size range covers paediatric to adult sizes and plus sizes and a full size bigger in thumb circumference to fit oedematous thumb conditions. Function and fit without bulk.