The Bogs Forge STMG is built especially to handle all the dirt and mud Mother Nature can throw at you. Constructed from durable hand-lasted rubber and flexible four way stretch 7mm Neo-Tech insulation. Features Bogs BioGrip outsole for an unprecedented combination of slip and chemical resistance, and the ultimate in safety with a protective metatarsal guard. Bogs Max-wick absorbs and evaporates sweat. Meets all ASTM steel toe and slip and chemical resistance standards. Comfort rated to -40?F. Satisfaction guaranteed.