Genuine Grip Women's Black Slip On Shoe Rubber Sole Patent-pending, Genuine Grip, slip-resistant rubber outsole delivers superior traction to help keep you steady on your feet. Removable, Walking On Air polyurethane insole helps to reduce foot fatigue. Moisture-wicking liner is treated with antibacterial Aegis Microbe Shield for a dry foot environment. Easy-care leather upper is oil and water-resistant. Dual side, stretch elastic on the upper offers a comfortable fit.