Rubber sole MEASUREMENTS: Heel measures approximately 4". High quality durable and flexible rubber sole is slip-resistant. STYLISH AND COMFORTABLE: Classic design of the summer pump sandals with soft padded insole and comfortable chunky block heels provide you all day long relaxing feelings and show your feminie elegance and confidence. ANKLE STRAP: The adjustable ankle strap designed with perfect length and width of the fashion summer pumps. True to size