Casting Sock Mid-Leg Polyester / Resin Beige X-Large, Male 12 to 15 Shoe SizeUsed to obtain molds for custom shoes, boots, and ankle foot orthotic devices Polyester material knitted with a defined heel and toe area and then impregnated with water curable resin More accurate then fiberglass rolls and reduces casting time Virtually eliminates all wrinkling and provides excellent conformity to the foot and ankle contours Glass smooth finish is ideal for CAD CAM Cutting strip and Channel tube are included for safe and innovative