STEEL TOE: Left and right asymmetrical uniquely anatomically correct 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 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; The Pittsburgh 6” work boot has a mesh liner that integrates with the waterproof membrane TRACTION: Oil- and slip-resistant, non-marking, rubber outsoles for improved traction; Lug sole patterns provide grip even on slick surfaces UNDERFOOT PROTECTION: Featuring a 90° heel and KEEN.KEY-TECH FLEX, which is a full length TPU interlocking torsional plate for underfoot support that provides structure, stability, and comfort; Locking metal lace hooks are used for easier lace up COMFORT: Removeable dual density EVA foot bed; Reflective webbing is used for additional safety and visibility