Meets or exceeds ASTM F2412-05 and ASTM F2413-05 MT75 metatarsal impact resistant safety standards. Built for extreme conditions, features waterproof leather and membrane with Thinsulate Zone insulation. Anti-microbial Cambrelle lining, shaft flex band and Goodyear welt construction. Constructed on Titan last for superior fit. Internal anatomical contoured metatarsal guard featuring OrthoLite polyurethane and rubber. Contoured OrthoLite footbed with Outlast Adaptive Comfort cover. Timberland PRO rubber Flex Rocker outsole featuring Independent Suspension Network system, slip, oil and abrasion resistance and Ladder Lock outsole radius.