Thumb Stabilizer | Thermoskin Thumb Stabilizer Thermal Support for Prevention; Treatment & Rehabilitation of your thumb. This stabilizer has a rigid removable ulnar collateral ligament (UCL) splint. Supports the CMC joint and reduces the effects of thumb hyperextension. Useful for UCL injuries associated with ball sports; skiing and work related repetitive strain problems. The ambidextrous design with adjustable straps make for a comfortable fit. | Universal | Sm | Beige