Made of woven cotton and coated rubber. Ideal for the individual whose wrist and hand are small in proportion to the forearm. Added strip of Velcro(r) loop gives this splint the broadest range of adjustability. Available in long and regular styles, for either the left or right arm. One adjustable size fits most large forearms. Measure circumference at the wrist crease and at the midforearm to determine size.Wrist: 6in to 8-1/2in (15 to 22cm) Forearm: 10in to 14in (25 to 36cm)