White cotton sateen laminated to 3/8″ thick beige foam with alternating hook and loop closures. One each medial and lateral stay and three contoured posterior stays are all removable. Specify size (circumference 6″ above and 6″ below knee): SM upper 15″-18″, lower 9 3/4″-12 3/4″; MD upper 17 3/4″-20 3/4″, lower 12 1/2″-15 1/2″; LG upper 20 1/2″-23 1/2″, lower 15 1/4″-18 1/4″; XL upper 23 1/4″-26 1/4″, lower 18″-21″.