Oliver 42 Series 6" Soft Toe Men's Leather Work Boots, Black (42646) Leather, TPU, PU Liquid-resistant leather upper is tough and durable; chemical-resistant boots feature an outsole that inhibits abrasions and is resistant to mineral oils, acids, alkalis, animal fats and oils Lightweight, shock-absorbing low-density PU midsole makes these comfortable work boots suitable for long wear on the job Heat-resistant boots: outsole is also rated up to 266 F (130 C) for use in many high-temperature work environments Meets ASTM F2413-11 EH; electrical hazard rated outsole Recommended use: construction, general purpose