STEEL TOE: Left and right asymmetrical, wider steel toes offering maximum comfort and unobtrusive fit that meet or exceed ASTM F2412 and F2413 EH compression and impact safety standards WATERPROOF: KEEN.DRY is a waterproof, breathable membrane liner that lets vapor out without letting water in for keeping your feet dry and comfortable; This boot does have a liner that integrates with the waterproof membrane TRACTION: Oil- and slip-resistant, non-marking, siped, rubber outsoles for improved traction that meet or exceed ASTM F1677-96 and F2913 SATRA standards SUPPORT & COMFORT: Features KEEN.ReGEN technology; a lightweight, compression-resisting midsole providing 50% more energy return than standard EVA foam making safety footwear more comfortable; Includes removable PU insole UNDERFOOT PROTECTION: Electrical hazard (EH)-rated footwear provides a secondary source of protection incase accidentally coming into contact with live electrical circuits