Enhanced with cutting-edge technology, our Mens Inferno Boa 2,000-Gram Winter Boots now have SolarCore aerogel barriers underfoot and over the toes. Tested and verified by an independent research laboratory, this NASA-inspired SolarCore insulation technology retained 54% more heat over a 30-minute period at 10F than traditional insulation. Additional warmth is supplied by incredible 2,000-gram Thinsulate Ultra Insulation, the most weve ever used in pac boots. 100% waterproof 4MOST DRY-PLUS linings are moisture-wicking to keep your feet dry in all conditions. Dial in and lock into place all this dry warmth easily and quickly with the Boa lacing system. These boots have lightweight EVA midsoles for extra cushioning and support, full-grain leather and nylon uppers, and abrasion-resistant toecaps and heel caps for lasting durability. Aggressive rubber outsoles bite into snow and mud to give you superior traction. Whats more, our Inferno 2000 Pac Boots give you all these features, superior comfort and warmth without the bulkiness you might expect from such boots. Imported. Order next size up if wearing with heavy socks. Ht: 12. Avg. wt: 5.7 lbs./pair. Mens whole sizes: 8-14 medium width. Color: Black. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Boots.