Designed to fit both left and right wrists with a circumference range of 14 cm to 22 cm. One size fits most Brace is engineered to support without restricting movement, making it ideal for continuous wear Supports Radius and Ulna - allowing TFCC to heal without surgery Relieves ulnar sided wrist discomfort from rotating, gripping, and weight-bearing Replacement screw-down feet available, sold separately, can be added to help provide extra stability, set of four (Item 557482)