Rocky Brute Waterproof Insulated Outdoor Boots have all the features you want in your hunting boots. The men's waterproof boots are guaranteed to keep your feet dry in wet, muddy or snowy conditions thanks to the Rocky Waterproof construction. These also are insulated boots with an extreme amount of insulation. The Brute has 2000 grams of 3M Thinsulate Insulation. This footwear keeps you warm on the coldest of winter hunting days. Material: Leather.