Fiber Content: Polyester, Nylon, Polyurethane Foam, Polyproplene Spandexinstructions: Wear Instructions: 1. Loosen All Fasteners And The Wrap-around Strap. Slide Hand Into The Stabilizer With Wide Vinyl Strip Running Along Palm Side Of Wrist. 2. Stabilizer Is Properly Positioned When Thumb Is In The Thumb Hole And The Splint Rest Comfortably In The Palm. Tighten Fasteners. 3. Wrap The Middle Strap Around Wrist. Adjust All Straps Until Fit Is Firm, Yet Comfortable. Care Instructions: Remove Metal Splint And Close Fasteners Prior To Washing. Hand Wash With Mild Soap In Warm (Not Hot) Water. Rinse Well And Air Dry. Do Not: Machine Wash, Tumble Dry, Dry Clean, Or Use Bleach Or Fabric Softeners. Size Selection: Measure Around The Wrist At Smallest Point. Size: Wrist, 5 1/2-9 In, 14-23 Cm