Carhartt developed met guard work boots to provide extra protection for hard working men in the most demanding jobs. We put safety first when it comes to your feet. Internal metatarsal guard identifies protection against impact and compression hazards to the top of the foot with a metatarsal guard. Metatarsal styles meet ASTM f2413-18 MT standards. Carhartt rubber outsoles provide superior traction and Carhartt pu with foam cushion insole provides comfortable support and reduces foot fatigue. Storm defender waterproof breathable protection is designed to be completely waterproof and to keep your feet dry in most types of wet conditions.