Helps relieve thumb joint pain associated with mild arthritic symptoms or degenerative joint disease of the thumb. Size adj. Support level 2. Low profile allows for free movement of remaining fingers. Helps relieve aching, sore or weak thumbs. Size Selection: For right or left hand, measure around the thumb knuckle, and then the wrist. Around Thumb: Adj size; 2 – 2-1/2 in; 5-6.3 cm. Around Wrist: adj size; 5-7 in; 12.6-17.7 cm. Support Level: Provides moderate support & stabilization to help and relieve symptoms associated with strains, sprains, mild arthritis and repetitive stress injuries. Trusted brand since 1918. Easy to put on and take off. Helps relieve thumb joint pain associated with texting and gaming. Comfortable thumb sleeve and strap for customizable support. Two stays for stability. Low profile allows for free movement of remaining fingers. Soft breathable and durable materials. The Ace Brand Thumb Stabilizer provides comfortable protection and support for aching, sore or weak thumbs. It is also ideal for those experiencing mild arthritic symptoms or degenerative joint disease of the thumb. Wear all day during activities which lead to discomfort. Support level 2. Provides moderate support and stabilization to help and relieve symptoms associated with strains, sprains, mild arthritis and repetitive stress injuries. Fiber Content: Nylon, polyester, urethane foam, spandex. If discomfort or pain results, persists or increases, discontinue use and consult a physician. www.acebrand.com. For more product information and hot to use product videos, Go to www.acebrand.com. Questions? 1-800-537-2191. Package is recyclable. Made in Mexico.