Fear no impact, feel no fatigue. Sierra Shock Shield® absorbs impact to reduce foot fatigue and keep you comfortable longer. 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 Men's Sierra Shock Shield Patriot Work Boots in Distressed Brown Full-Grain Leather, Size: 7 D Medium by Ariat