This is a replacement sock for the Aircast Walker series of braces. This white sock is compatible with the XP Walker, FP Walker and the SP Walker braces / boots. This is a full length, stretch tube sock that measures 22 inches long. With use, this sock helps reduce skin irritation while wearing a brace or boot. This closed-toe sock is made with a cotton/polyester/lycra blend. One size fits all. With use, this sock helps reduce skin irritation while wearing an foot brace or boot Compatible with the following Aircast Walker Braces / Walking Boots: XP, FP and SP models Full length, stretch tube sock that measures 22 inches long This closed-toe sock is made with a cotton/polyester/lycra blend Includes 2 white sock liners; One size fits all