Heat-resistant rubber outsole rated up to 572F/300C, 100% non-metallic construction for easily passing through metal detectors in highly-secured areas, Non-mutilating upper reduces the chance of marking or scratching surfaces, Cement construction for flexible, lightweight performance, KEEN.LOCKFIT firm U-shaped support provides extra heel stability and KonnectFit heel-capture system for a locked-in feel, KEEN.ReGEN+ midsole is lighter and more compression-resistant, providing over 60% energy return for a more responsive feel and removable metatomical insole for comfort and support, Oil- and slip-resistant non-marking rubber outsole, Electrical hazard (EH) or Electric Shock Resistant (ESR) footwear helps provide a secondary source of protection in case of accidental outsole contact with live electrical circuits, Mesh liner provides breathability to help keep feet cool in warm environments, Imported,