Extremely durable, cushioned, and heat-resistant, the Sierra collection keeps feet comfortable and supported in tough conditions. It's ideal for harsh outdoor jobs, high heat environments or intense construction work. Sierra Work Boot Product Features : ATS® technology provides lightweight support that helps your foot adapt to uneven surfaces for lasting comfort and stability, All Day Cushioning insole helps provide comfort and support that can be easily removed for cleaning or replacement, Oil- and slip-resisting Duratread™ sole combines durability with flexibility, engineered for long-lasting performance, High heat-resistant sole, 90° heel helps provide secure footing on ladders and uneven surfaces, Goodyear welt construction joins the sole to the upper, providing long-lasting durability and extending the life of your boots, ASTM F2892 EH SR rated Men's Sierra Work Boots in Black Premium Full-Grain Leather, Size: 7.5 D Medium by Ariat