These boots have 46% more material than the closest competitor. Made with a revolutionary Frigiflex® PVC compound with special additives for high stretch and flexibility that stays supple in the coldest weather. Thicker tread has deeper cleats with sharper edges for more traction. One piece molded construction means they are 100% waterproof. Smooth, slip finish inside for easy on and off over the shoe. The kneeboot features a no-pinch, molded in button and two holes for better fit and protection. Color: Black.