Timberland PRO Gravel Pit 10 Inch Steel Toe Mining Boot 53531 is built from a durable leather upper and offers a waterproof seal to keep your feet dry while the Thinsulate insulation keeps you warm on the cold. Inside will be an ASTM rated steel toe for protection against compression and impact while on the construction site. These boots have been built with a Goodyear welt construction for a stable and long wearing build.