Waterproof and windproof protection the pu coated fleece fabric used here is both waterproof and windproof providing excellent warmth in moderate temperatures for long term durability gripgrab39s designers have added kevlar reinforcement at the front below the toes through the use of an adjustable hook and loop strap underneath gripgrab ensures the orca overshoes offer a perfect fit with both mountainbike and road shoes a high quality ykk back zipper provides a solid and reliable closure