Cushions and helps protect the thumb. Gel Shell pad provides gentle pressure on the incision site to help reduce scar formation and hypersensitivity. Optional Polyform stay along radial side of thumb provides additional support to the thumb. Gel pad cushions area over first dorsal compartment to help protect it and disperse energy of impacts. Outer fabric splint provides barrier against trauma and provides semi-rigid support to CMC and MCP joint. Hand wash, air dry. To determine size, measure from radial styloid process to the IP crease of thumb with wrist in neutral.