A quick, easy, simple, clean and accurate casting system for taking a mold of the foot, ankle and leg for use in the fabrication of virtually all types of ankle-foot orthotics (AFOs), gauntlets, and high-top custom boots. The sock is designed to provide a cast/mold that comes up the leg to approximately the mid-calf area. Each box comes with 10 socks, one protective cutting strip and tube, as well as 10 protective barrier baggies.