Get an incredible fit - no casting or baking required. The Superfeet COPPER features a pressure-sensitive, memory foam layer that molds to the contours of your foot. Helps support the foot during high-impact activities and long distances. Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes first. The low-profile shape helps stabilize and support the foot, which can help reduce stress on feet, ankles and knees. Pressure-sensitive foam shapes to your foot for personalized comfort. All natural coating that eliminates odor-causing bacteria. The base of the insole that supports the rear foot and provides structure and stability to the foam layer.