【Steel Toecap, YKK Zipper】Fashion & Casual Design, Suit for Mechanic, Concrete, Welder, Construction, Heavy Industry, Manufacturing & Warehouse, Transportation. 【PORON Xrd & CoolMAX】Fabric made with COOLMAX technology make sweat away from the body to keep the wearer cool and dry on hot days, fiber structures provide insulation on colder days. Fabric made with PORON Xrd Repeated Impact Protection, Comfort, Breathable, Thin and Lightweight. 【TPU Outsole】Release Static Electric into the Ground While Driving or Wearing Sweaters Rockrooster TPU Outsole. 【Oiled Full Grain Tumbled Leather & Comfortable Support Insoles】 Contoured Footbed Cradles the Foot to Provide Maximum Comfort and Support. 【Memory Foam Insole, 6" High】Comfort Technology Footbeds by Coolmax Technology. All the ROCKROOSTER Work Boots Conform to American Standard ASTM F2413-11 I/75 C/75. Rockrooster