STEEL TOE: Left and right asymmetrical steel toe design provides a roomier toe box for maximum comfort and unobtrusive fit; This boot 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; The Detroit mid work boots have a mesh liner that integrates with the waterproof membrane TRACTION: Oil- and slip-resistant, non-marking, rubber outsoles; Lug sole patterns provide grip even on slick surfaces; Meets ASTM F1677 Mark II and ASTM F2913 SATRA non-slip standards SUPPORT & UNDERFOOT PROTECTION: Featuring a contoured heel lock, and a nylon shank plate for underfoot support that provides structure, stability, and comfort COMFORT: This boot is made without the use of forever chemicals and with leather from LWG-certified tanneries for durability that’s lighter on the planet