【Safety Standard】ROCKROOSTER Cortez AK050 mens work boots conform to american standard ASTM F2413-18 I/75 C/75 SD. 【Steel Toe & YKK Zipper】Fashion & Casual Design, Suit for Mechanic, Concrete, Welder, Construction, Heavy Industry, Manufacturing & Warehouse, Transportation. 【Shock Absorption & Breathable】Fabric made with COOLMAX technology transports moisture 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 to disperses plantar pressure. Comfort, Breathable, Thin and Lightweight, Endurance. 【Static Dissipative, Non-slip TPU Outsole】Release static electric into the ground while driving or wearing sweaters. Slip-resistant and oil resistant rockrooster TPU outsole. 【Nubuck Leather & Comfortable Support Insoles】 Water resistant. Anti-fatigue Comfort Technology Footbeds. Anatomically contoured footbed cradles the foot to provide maximum comfort and support.