16" Steel Toe, Steel shank, Waterproof, 5.5 mm bootie + 2.5 mm DENSOPRENE XD foam (extreme density) for extra protection + 2 mm airmesh + 2 mm warm fleece lining = 11 mm of insulating warmth and protection!, 6 layers of protection plus EVA cold-blocking midsole,Meets ASTM F2413-11 M I/75 C/75 EH, ANSI-rated steel toe for safety