DESC: The moldable Flexible Thumb Splint supports the CMC joint, while providing heat therapy and rigid support for UCL injuries associated with ball sports, skiing and work related repetitive strain problems. Thermoskin Thermal Supports contain the exclusive patented Trioxon® lining that has been clinically proven to increase your surface and subcutaneous skin temperature 2 to 3° F. This helps increase the elasticity of muscles, tendons, and ligaments to reduce the risk of injury when under stress. Thermoskin Thermal Supports also increase the blood flow to damaged tissue to help speed up the healing process, while providing light compression to counteract tissue swelling. The spiral structure of the Trioxon lining creates a micro-climate which allows the skin to ventilate by wicking away moisture and does not close the pores of the skin. You can wear Thermoskin for extended periods of time without the discomfort you would have with other products. Competitive products trap the perspiration