Lightweight and breathable material. Fits discreetly under clothing. Dual-strap design for custom level of support. Helps limit wrist motion and protect tender wrists. The Ace Brand Wrap Around Wrist Support is designed to provide support to stiff, weak or injured wrists. Wear during activities which lead to discomfort. Provides adjustable levels of compression, support and therapeutic heat retention to help relieve symptoms associated with strains, sprains, arthritis and muscle pain. Size Selection: For left or right hand, this support is adjustable to fit most wrists. Measure around wrist. Adjust to fit 5-1/2 to 9-1/2 inches. Trusted brand since 1918. The Ace trademark is your assurance of quality support and comfort. 3M guarantees your complete satisfaction. Made in China for 3M.