5.5 inches-7.5 inches. Helps relieve carpal tunnel syndrome. Comfortable for day or night use. Latex free materials. Doctor recommended to help relieve pain and swelling (Physicians often recommend the use of a rigid wrist brace during management of carpal tunnel syndrome and other painful wrist conditions. If symptoms persist, discontinue use and contact a physician). Easy to put on and take off. Adjusts for customized fit and allows free movement of fingers. Made with latex free materials that are breathable, durable and soft. Comfort pad strap helps prevent irritation around thumb. Slide-guard fasteners for secure fit and ease of application. Palm padding uses comfortable, conforming memory foam. Palmar splint can adjust to optimize wrist position. Easy sleeve design for effortless application. The Ace Brand Deluxe Wrist Stabilizer helps provide comfortable protection and firm support to injured, weak, or post-cast wrists requiring rigid stabilization. For a comfortable night's sleep, try the Ace Brand Wrist Sleep Support - made with light, breathable materials and cushioning beads, it maintains your hand in the ideal neutral position for maximum therapeutic benefit. The Ace trademark is your assurance of superior quality, support and comfort. 3M guarantees customer satisfaction. If discomfort or pain results, persists or increases, discontinue use and consult a physician. Firm - Designed to provide firm support and compression during activities and not intended to be worn for an extended period of time, but removed after an activity. Measure around the wrist at smallest point. Made in Taiwan.