Fear no impact, feel no fatigue. Sierra Shock Shield® helps you stay comfortable longer absorbing impact to your feet. Extremely durable, cushioned, and heat-resistant, it's ideal for harsh outdoor jobs, high heat environments, and intense construction work. ATS® technology provides ergonomic support on uneven terrain Shock Shield® technology diffuses heel impact while absorbing shock and helping minimize fatigue Removable Energy Max™ anti-fatigue insole for maximum comfort Oil- and slip-resistant Duratread™ sole provides maximum wear resistance High heat-resistant sole Goodyear welt construction Four-row stitch pattern with embroidery ASTM F2413 M/I/C EH rated Ariat is including you in its dedication to environmental stewardship. By purchasing this product, you are supporting the responsible production of leather at Leather Working Group-certified tanneries. Ariat Men's Sierra Shock Shield Steel Toe Work Boot 10046929