Bobcat K Zip Insulated Pac Boot,Kenetrek,KE-SZ428-K" /> Rubber sole 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. Custom Kenetrek K-Talon Outsole design has a deep and open tread design for serious grip and traction.