Upper: Cold Defender PU resistant to -25°C. Lining: ABRASION RESISTANT POLYESTER. Foot Bed: COLD BARRIER, anatomic and perfumed foot bed, insulating against low temperatures. The thermal comfort inside the footwear is granted thanks to the specials PU compound devised to give high insulation. Outsole: INSOLE: Cold Defender PU resistant to -25°C. OUTER SOLE: Nitrile rubber. Plus: Innovative extra-light compound. It resists very well to hydrolysis, permitting the boot to maintain its chemical and physical performance during time. A perfumed essence is added to the compound to prevent nasty odours. ABRASION RESISTANT CLEATS 11 mm. COLD INSULATION (-50°C). non-metallic APT Plate, non-metallic TOP RETURN toe cap.