Pressure-sensitive memory foam cushioning molds to the contours of your feet and combines with stabilizing support for must-have comfort, especially for long hours on your feet. Designed to replace the removable liner in roomy footwear. Fit & Design: Low arch orthotic support helps stabilize the foot, reducing stress on feet, ankles, knees and back Accommodating heel cup cradles the heel Moisturewick(TM) top cover helps reduce odors and keeps feet fresh Stabilizer cap supports the rearfoot and provides structure and stability to the foam layer Pressure-sensitive memory foam molds to the shape of your foot for personalized comfort Doctor-recommended Superfeet shape -approved by the American Podiatric Medical Association Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes first