Constructed of orthopedic felt, providing support and comfort. Anatomically contoured to provide secure fit. Brass eyelets and sturdy lacing pull provide unique and easy application. Stockinette tongue provides secure assist during application. Useful for carpal tunnel, sprains, strains and after cast removal. Position of moveable dorsal stay can be adjusted for desired amount of upward hand movement. Universal - Wrist Circumference 4.5" to 9.5" (11.4 cm to 24.1 cm) XS - Wrist Circumference 4.0" to 6.0" (10.2 cm to 15.2 cm) XL - Wrist Circumference 7.5" to 11.0" (19.1 cm to 27.9 cm)