The thumb strap closure provides optimum comfort, stability and ease of application. The unique design also offers the versatility to fit the left or right thumb. Three malleable stays ( dorsal, palmar and radial) provide exceptional support for the thumb. The breathable polypropylene liner and durable perforated suede exterior allow moisture to evaporate away from the skin for optimum comfort. The elastic strap at the base of the hand/palm permits ulnar and radial deviation of the wrist.