Unbelievable support packed into a slim profile with a low arch height. Gives you support where you need it most, helping redistribute forces to reduce stress and strain on your entire body, not just your feet. Designed to fit well in slim-fitting footwear, even some without removable insoles. 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 Durable high density closed-cell foam supports the whole foot for long-lasting 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