Chooka Women's Hyper Stripe Rainboot 100% Rubber Rubber sole Shaft measures approximately 12" from arch Heel measures approximately 1 1/4" Platform measures approximately 3/4" Boot opening measures approximately 13 3/4" around Moisture absorbing cotton knit lining Heavy treaded outsole for slip resistance Adjustable strap with metal clasp for perfect fit 100% natural rubber and vegan friendly