Hoffman’s 400 Gram Insulated Armor Pro Calk boot is one of the toughest boots we have developed. This rugged 8 inch mountaineer-style work boot is coated in a “stark” material (similar to truck bed lining) making it more cut resistant, adding another level of waterproofing, and extending the overall life of the boot. Four Hundred Grams of thinsulate are added to help keep you warm in cooler conditions. Made in Italy