Steel Toe Thinsulate Safety CalkFor those needing a steel toe, our Thinsulate safety boot with calks is perfect for the logger on the go. A pure natural rubber bottom features layers of polyester and polyamid to extend the boots life. It provides the most durable and crack resistant steel to bottom on the market. Removable Thinsulate liners, 7 7 1 2 oz. leather uppers, triple stitched seams and a replaceable calk sole are all standard features. FITTING TIPS: Hoffmans Thinsulate