Barnyard-resistant FARMGUARD leather locks out rain, mud, and oil while resisting the damaging effects of harsh chemicals like oleic acid, urea, sodium chloride, and ammonium hydroxide, Industry leading BRUNT rubber outsole is oil- and slip-resistant and high-heat resistant up to 572F/300C, Electrical hazard (EH) provides a secondary source of protection for accidental contact with live electrical circuits, Reinforced double- and triple-stitching at stress points, Outsole and midsole meet ASTM D471-06 903 oil and isooctane chemical-resistant standards, Meets ASTM F2892-24 standards, ASTM F2913-19 SATRA non-slip testing standards, and ASTM F1677-96 Mark II non-slip testing standards, Nylon shank for additional midfoot support, BRUNT Polyurethane (PU) midsole is longer lasting and provides superior cushioning and support compared to an EVA midsole, Premium BRUNT Cush'n insoles feature a nonstick top layer, a memory foam midlayer, a cushy bottom layer, and an anti-odor treatment, The BRUNT SWITCH-FIT adjustable width system lets you easily switch your boots from a regular fit (D) to a relaxed fit (EE). Just remove the grey insert from below your insole, and you've got a new custom fit in seconds without needing to swap boots