Work boots meet all requiremenst for the toughest work conditions whiel surpassing maximum protection and comfort. Lightweight, self-insulating CR Flex-foam bootie provides a snug fit to keep out cold temperatures and keep workers' feet warm. Hand-layered construction is sealed for 100% waterproof reliability. Removable EVA sock liner. Breathable air-mesh lining wicks away humidity and perspiration. Diamong-textured toe and heel reinforcements resist scuffs and scratches. Extra wide kick off lugs for easy hands free removal. Meets ASTM F2413-11 M I/75 C/75.