Static dorsiflexion assistance and lateral stability for the entire foot-ankle area is provided by this polyethylene splint. Thicker on the vertical aspect for rigidity. Footplate can be trimmed with scissors. A heat gun maybe used for customizing. The low arch and open heel give it a streamlined profile that fits easily into any shoe. Padded hook & loop strap.Women�s fits up to Women�s shoe size 9 1/2. Men�s fits up to Men�s size 12.* *Caution:This product contains natural rubber latex which may cause allergic reactions