UPPER Low density PU, anatomic, light and flexible LINING Abrasion resistant polyester FUSSBETT Insulating against low temperatures. The thermal comfort inside the footwear is granted thanks to the specials PU compound devised to give high insulation. Covered with cloth OUTSOLE Hydrolysis, abrasion and slipping resistant sole, high grip (NITRILE RUBBER) PLUS MIDSOLE, Antishock and thermally insulating (Middle density PU)., Non metallic APT puncture resistant plate, non metallic TOP RETURN WIDTH WIDE SIZES 7 -13