Extremely durable, cushioned, and heat-resistant, the Sierra collection keeps feet comfortable and supportive in tough conditions. It's ideal for harsh outdoor jobs, high heat environments or intense construction work. Cascade 8 Work Boot Product Features : 0 : ATS® technology provides ergonomic support on uneven terrain, 1 : Removable All Day Cushioning insole, 2 : Oil- and slip-resisting Duratread™ sole for maximum wear resistance, passes hot contact test at 300°C572°F, 3 : 90° heel, 4 : Resolable Goodyear welt construction for durability, 5 : Removable kiltie, 6 : ASTM F2892 EH rated Men's Cascade 8 Work Boots in Sunshine Wildcat D Medium by Ariat"