A triple-lined protective boot for winter use with lacing and the highest protection class (S3), designed for very cold environments. The upper in PU-coated leather protects the feet and keeps them warm and comfortable all day. The nitrile outsole is both oil and heat resistant with an extremely good grip, and JALAS aluminum toe cap, spike protection in plasma-treated textile and double shock-absorbing zones in Poron XRD prevent damage.