Kenetrek Men's Northern 13in Insulated Winter Boots - These boots allow you to stand on frozen tundra all day long when others are trapped inside only dreaming of adventure. Super thick 6oz oil tanned leather uppers are contoured to fit your leg precisely for incredible support and comfort Snut-Fit lacing system with stud hooks and Power D-Ring lace anchors for the ultimate in ankle support 400g of Thinsulate Ultra insulation removable liner 3mm wool felt Rubber bottom sandwiched with another 600g of Thinsulate and 9mm of wool felt underfoot Hand-made rubber outsoles are vulcanized for durability and feature steel shanks with double thick midsoles Custom Kenetrek K-Talon Outsole design has a deep and open tread design for serious grip and traction Specialized "K" lugs for multidimensional traction 13in Style: KE-3428-6K