Honeywell Proprietary RDR oil- and chemical-resistant rubber withstands many organic and inorganic acids, oils, chemicals and contaminants 100% Waterproof including 5 mm waterproof neoprene bootie; combines with Spandura high-abrasion nylon for added durability and a temperature rating of -20 °F (-29 °C) Slip-resistant, non-marking Chevron outsole provides excellent traction in extreme conditions on any surface Breathable Airmesh lining regulates temperature