The Carpal Tunnel Glove combines heat therapy and light compression for arthritis or aching hands, with protection against carpal tunnel syndrome. The Carpal Tunnel Glove is anatomically shaped to allow full use of fingers. The outer layer of fabric is textured to provide additional grip to aid in daily living activities. The Carpal Tunnel Glove has a metal splint positioned at 25 degrees which helps prevent wrist movements that can cause Carpal Tunnel Syndrome. A fully adjustable locking strap wraps around the wrist for a better fit and to keep the glove in proper position. Gloves Measurement Guide: Measure circumference of the hand around the knuckles: X-Small (6 – 6.75 inches), Small (7 – 7.75″), Medium (8 – 9″), Large (9.25 – 10.5″), X-Large (10.75 – 11.5″), XX-Large (11.75+ inches). If in doubt it is generally recommended to select the larger size.