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. Sierra Steel Toe 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 : ASTM F2413 MIC EH rated Men's Sierra Steel Toe Work Boots in Black, Size: 7 D Medium by Ariat