Super thick 6 ounce oil tanned leather uppers are contoured to fit your leg precisely.,Oversized heavy duty zippers are easy to operate with one hand yet stand up to the toughest conditions.,Removable 6 mm thick three part liner quilted from a wicking durable synthetic, 400 grams of 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.,Features a tractor-tread Outsole design that provides great traction and is widely spaced, allowing mud and debris to be easily removed.