Comfort Cool Long D-Ring Thumb/Wrist, Size: Size: L, RightThumb tip can be trimmed quickly to allow full IP flexion. Protects and supports the thumb and wrist for conditions such as arthritis, tendinitis, sprains, strains, skier''s thumb, gamekeeper''s thumb, de Quervain''s syndrome, wrist instabilities and post-surgery. Volar wrist and thumb metal inserts can be bent to conform as needed and can be removed as the condition improves. Made of thin, 1/16 (1.6mm) perforated neoprene with a terry cloth liner to help keep skin dry. Latex free. Two models available, Long measures 2 (5.1cm) longer than Regular To size, measure circumference at distal palmar crease.XS: 6 to 7 (15 to 18cm)S: 7 to 7 (18 to 20cm)M: 7 to 8? (20 to 21cm)L: 8? to 9 (21 to 23cm)XL: Over 9 (Over 23cm) Product photo may not exactly match the product offered for sale. Please refer to the product description.