Full-grain leather upper with 50% recycled polyester lining and DRYShield waterproof, breathable construction that helps keep feet dry and comfortable when working on wet or muddy ground, ATS technology provides lightweight support that helps your foot adapt to uneven surfaces for lasting comfort and stability, Shock Shield technology diffuses heel impact while absorbing shock and helping minimize fatigue, 3M Thinsulate Insulation for lightweight warmth, All Day Cushioning insole helps provide comfort and support that can be easily removed for cleaning or replacement, Oil- and slip-resisting Duratread sole combines lasting durability with flexibility and passes hot contact testing at 300C/572F, Specialized outdoor lug tread with debris-release design is engineered to provide reliable traction on varied terrain and 90 heel helps provide secure footing on ladders, rungs, and uneven surfaces, 8" shaft height and 2" heel height, Goodyear welt construction joins the sole to the upper, providing long-lasting durability and extending the life of your boots, ASTM F2413 I/C EH SRO rated,