This Arthritis Mitt Splint immobilizes the wrist and MCPs while allowing movement of the IPs and is designed to alleviate pain caused by arthritis. Alignment of fingers is maintained with the Rolyan Ulnar Deviation Strap (included with splint and sold separately). This product is sold in Extra Small, Small, Medium and Large and for both the right and left wrist. This product is excellent for personal and clinical use.