DESC: Made of 5mm "CR-Foam" top, a revolutionary material that acts as a "Neutral Medium" for conducting hot and cold external temperatures. CR-Foam is a super dense material, but extremely lightweight with outstanding insulating qualitities to -10. The CR-Foam Bootie forms a complete protective covering around the foot/ankle/calf for a comfortable, snug fit. Seams are vulcanized for a 100% waterproof boot, top to bottom. Multi-ribbed outsole provides excellent traction, comfort and shock absorption. Ideal for camping, streamside, yard work or those quick trips to the horse barn. Please note women need to order one size smaller. 13