Mountain-tough work boots. The most durable platform on the market combines with Ariat's secure, comfortable ATS stability system. This oil- and slip-resisting sole provides extreme heat (tested to 750°F/400°C) and abrasion resistance. Premium full-grain leather upper, Goodyear Welt construction, ergonomic support and cushioning, this heavy-duty boot delivers. Soft toe rated ASTM F2892-11 Electrical Hazard. Ariat Men's Sierra Black Round Toe Work Boot