The Asphalt I/75 C/75 EH PR work boot has a polyurethane/rubber sole without cleats to avoid leaving marks on asphalt. It resists up to 8 hours in a sand bath at 212° F. Its midsole polyurethane compound prevents heat from passing through the sole and into the boot. It resists 302° F and higher for 30 minutes without its chemical-physical features being altered.
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