Moisture releasing materials. Helps relieve sore, aching or weak thumbs. Reversible for right or left hand. Support your active life. Helps stabilize the lower thumb joints. Allows free movement of remaining fingers. Patented design adjusts for ideal fit. Easy to put on and take off. 1. Velcro brand fasteners for custom fit. 2. Two metal stays for stability. 3. Soft, breathable, durable, latex-free materials. 4. Adjustable wrist strap for added support. This Futuro Deluxe Thumb Stabilizer provides comfortable protection and firm support for weak, aching or sore thumbs. It is also ideal for those experiencing arthritic symptoms or degenerative joint disease of the thumb. Wear all day or during activities which lead to discomfort. Size: For right or left hand, measure around the thumb knuckle, and then the wrist. Large/X-Large: Around Thumb: 2.5 - 3.0 in. Around wrist: 7.0 - 7.9 in. Developed in collaboration with a panel of physicians, surgeons and medical specialists. Futuro offers a wide range of high quality products. Each is designed to offer optimal support, comfort and fit. Guaranteed. Made in U.S.A.