AMERICAN BUILT: Assembled with pride in Portland, Oregon, with a minimal-waste design using the finest materials from around the world; We’re proud to bring footwear manufacturing back to the USA, and to do it all in one of America’s most modern factories CARBON-FIBER TOE: Left and right asymmetrical, non-metallic carbon-fiber (composite) toes offer unobtrusive fit and are 15% lighter than steel; These boots meet or exceed ASTM F2412 and F2413 M I/75, 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 Troy 6” KBF Composite Toe work boots have a mesh liner that integrates with the waterproof membrane TRACTION & SUPPORT: Oil- and slip-resistant, non-marking, rubber outsoles; Featuring KEEN.BELLOWS FLEX technology which allows the footwear to bend and flex up to 3x easier; These boots meet or exceed ASTM F1677 Mark II and ASTM F2961 COMFORT: KEEN LuftCore is a lightweight, air-injected core in higher-density foam to enhanced midsole cushioning and shock absorption; Removable footbed, and KEEN Luftcell air-infused, PU midsoles are used for weightless comfort