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. Sierra Shock Shield Patriot Work Boot Product Features : ATS® technology provides lightweight support that helps your foot adapt to uneven surfaces for lasting comfort and stability, Shock Shield® technology diffuses heel impact while absorbing shock and helping minimize fatigue, Energy Max™ anti-fatigue insole helps provide maximum comfort and support that can be easily removed for cleaning or replacement, Oil- and slip-resisting Duratread™ sole combines lasting durability with flexibility and passes hot contact testing at 300°C572°F, 90° heel helps provide secure footing on ladders, rungs, and uneven surfaces, Resoleable Goodyear welt construction joins the sole to the upper, providing long-lasting durability and extending the life of your boots, ASTM F2892 EH rated Men's Sierra Shock Shield Patriot Work Boots in Distressed Brown, Size: 7 D Medium by Ariat