Meets ASTM Safety Standards: This leather steel safety toe work boot with HRO designed rubber outsole is slip, heat, impact, compression, and electrical hazard resistant to meet ASTM F2413-18, M/I/C, EH and ASTM F3445-21, SR safety standards. HRO soles are heat resistant to melting at a minimum of 475º Fahrenheit. Steel Safety Toe: Steel safety toe provides an additional protective layer of defense from many hazards that may be encountered at a worksite. Comfortable & Durable: The removable polyurethane footbed gives your feet long-lasting comfort, and the midsole of the boot includes a comfortable steel shank that increases stability and offers extra underfoot support. The midsole is built with RPM technology, a special composite material that reduces the weight of the boot and adds all-day comfort. Waterproof Design: Full grain leather is protected with UltraDry waterproof construction that combines a moisture management lining with waterproof components for dry, long-lasting comfort and performance. Platform Construction: The Goodyear Welt construction of the sole prevents water intrusion and adds strength and durability to the boot making it long lasting. It allows the boot to be resoled to extend the life of the boot.