Product Details: Size Chart European design and manufacture by an adult and specialized workforce Full grain hydro york leather upper Rabbit fur collar Wool lining also equipped with WINTHERM multilayer membrane Italian sole designed to increase grip on snow and ice ALASKA outsole by OC System, equipped with 16 stainless steel pivoting and folding cleats system with flow channels Grip system featuring stainless steel studs and a framework created with a special, flexible polyurethane that is durable even at the most extreme temperatures Mid-sole guaranteeing impact and compression resistance (certified UNI EN 12568, as required by the security footwear regulations) Additional ISOWARM insole made of 90% wool with insulating and reflective silver film Removable insole allows an orthopedic expert to replace it with a foot orthosis, modify and improve the fit of the boot Laces with sturdy eyelets and metal hooks BREATHTEX waterproof membrane Comfort zone up to -30°C *This boot fits small. Go up 1 full size.