Protects The Thumb With Its Lightweight  Perforated Outer Shell * Has A Cool Terry Liner With Contact Closure Straps For A Comfortable Feel *  Prevents Wrist Rotation * Protection For Injured Thumb And Thumb Joints * Perforated Outer Shell To Help Keep Cool * Recommended For Treatment Of Arthritis  Skier's Thumb And Gamekeeper's Thumb *  Suggested Hcpcs Code: L3923