STEEL TOE: Left and right asymmetrical steel toe design provides a roomier toe box for maximum comfort and unobtrusive fit ; The Pittsburgh 6" meets or exceeds ASTM F2412 and F2413 I/75 and C/75 EH 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 mesh liner that integrates with the waterproof membrane TRACTION: Oil- and slip-resistant, non-marking, rubber outsoles are used for improved traction that meet or exceed ASTM F1677 MARK II and ASTM F2913 SATRA Non-Slip Testing Standards; Lug sole patterns provide grip even on slick surfaces UNDERFOOT PROTECTION: Electrical Hazard (EH)-rated to provide a secondary source of protection from live electrical circuits; KEEN. KEY-TECH full-length stability plate fits into the midsole of the shoe like a key giving added support SUPPORT & COMFORT: Moisture-wicking textiles are used to keep feet dry and removable PU insoles provide the flexibility of changing them when you need to; Features a 90° heel that gives added stability and helps "catch or lock" the foot in place