Oliver 65 Series 14" Leather Puncture-Resistant Waterproof Men's Steel Toe Mining Boots with Metatarsal Guard, Black (65691) 14" leather miner's Extra-high, liquid-resistant leather upper with TPU SAFETYcell reinforcement for protection from oils and minerals, cuts and abrasions All-Terrain Dual Density Soling Technology combines a soft, shock-absorbing Dual Density PU midsole with a high-density, durable rubber outsole Slip-resistant boots feature All-Terrain outsole that is heat-resistant up to 572 F (300 C) and resistant to mineral oils, acids, alkalis, animal fats and oils Meets ASTM F2413-11 M I/75 C/75 Mt/75 PR SD; Qflex Zero non-metallic puncture protection, XRD Metatarsal Guard, NATUREform steel toe impact protection Recommended use: mining, oil and gas