Extremewear Heat-resistant safety boot Upper Full grain leather Full leather external wrap, secured by 3 stainless steel, quick-release buckles to protect the foot from sparks and metal burns entering the boot Lining The quarter lining is from an Industrial Ferrabelle non-woven material The vamp lining is from a special Kevlar blend material and laminated to foil to reflect heat away from the boot In Sock Non-woven material in-sock laminated to Kevlar, to protect the foot from heat transferance through the sole of the boot Top Sock Anti-bacterial Energiser woollen top sock with microbial properties Midsole Shank reinforcement for additional arch support Toe Cap Aluminum Sole Dual Density PU/Rubber (Heat-resistant up to 300°C) NRCS/9002/287766/0327 EN / ISO 20345