Upper Full grain S3 leather Padded collar and bellows tongue 7 pair D-ring lace-up Lining Vamp, quarter and tongue lining consist of Ferrabelle fabric laminated to 3M thinsulate insulation material, guaranteeing warmth down to -25 °C (Conforms to SatraTM 436) In Sock Non-woven material in-sock laminated to 3M needle felt thinsulate for maximum thermal insulation Top Sock Anti-bacterial Energiser woollen top sock with anti-microbial properties Midsole Anti-penetration midsole available – 42603 (MTO) Toe Cap Steel Sole Dual Density PU/Rubber (Cold resistant down to -25° C)