The Timberland PRO Excave 10 Inch Steel Toe Waterproof Wellington 91677 is made from a durable and long wearing waterproof leather and textile upper to increase the comfort and durability of your boots. Inside will be an ASTM rated steel to for protection against compression and impact while on the job site. This classic wellington boot will come with a steel shank for support and made atop an oil resistant outsole. They are also breathable and feature moisture-wicking lining with anti-microbial treatment for odor control.