Versatile: Wrist/thumb orthosis ideal for wrist sprains and strains, scaphoid injuries, carpal tunnel syndrome, Gamekeeper’s thumb, and de Quervain’s Syndrome symptoms Wrist and thumb support: Dual aluminum stays support palmar surface of wrist and extensor surface of thumb. Lightweight fabric: Durable, lightweight fabric lined for breathability and comfort Adjustable: Malleable, removable stays allow customized fit and proper angulation. Hand washable Extra small fits those with a wrist circumference up to 5½ inches. .