Dr. Comfort Women's Cozy Therapeutic Slippers Nubuck Dr. Comfort Gel insert provides cushion underfoot for amazing comfort as you walk. Slip-resistant outsole and built-in protective toe box makes every step as safe as the last. Extra-depth helps to accommodate swollen feet. Microfiber upper, fleece upper lining, gel insole, rubber outsole. Care: Scrub gently with soap and water.