Aerothotics size 9 black slides All-Day Comfort: The built-in arch offers tailored support, contouring the natural shape of your feet for hours of comfort. Arch Support & Heel Cup: Designed to provide exceptional arch support for medium arches, ensuring comfort throughout your day. While the deep heel cup cradles the foot for better alignment and enhanced stability. Soft Cushioned Strap: The softly padded inner strap provides extra added comfort. Improved Traction: The outsole features a unique pattern that maximizes grip and stability with every step. Podiatrist Recommended: Accepted by the American Podiatric Medical Association (APMA), for foot health.