Dr. Martens Iowa Extra Tough Poly Work Boot. Unisex Boot sits on top of a Tract GripWair Sole giving it added traction & durability. The perfect work boot for winter construction. Marked with yellow bold accents throughout, fitted with tech inspired details. Sole Material Rubber Shaft Height Ankle Shaft Circumference 10 DryWair is a proprietary, highly breathable yet waterproof membrane that locks out moisture while allowing feet to breathe Classic Doc's DNA including signature yellow welt stitch, grooved edges, and AirWair heel loop. Excellent condition like new