A high-cut, triple-lined winter safety boot with highest protection for very cold environments. Specially treated leather with heat resistance para-aramid thread in the seams provides a max operating heat limit of 400°C/752°F for 30 minutes and resists weld spatter. "W" in the name indicates that the boot is certified for welding. The oil and heat-resistant nitrile outer sole gives excellent grip and JALAS® aluminium toe cap, plasma-treated textile puncture protection and double impact protection zones in PORON® XRD® mean safety with every step.