Kenetrek Unisex 13 Inch Grizzly Insulated Boot Leather Rubber sole Super thick 6 ounce 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 Removable 6 mm thick three part liner quilted from a wicking durable synthetic, 400 gram Thinsulate Ultra Insulation, and finally 3 mm of wool felt to insulate even when damp 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