The Danner Men&';s Springfield 4.5IN Boot is a work boot blended with one for the trails. Head to work in comfort and support and it will still hold tough when it comes to protection. Featuring a Danner Dry membrane, it is waterproof and breathable so you can take on the weather without worry of wet feet. This trusty boot Uses a Plyolite; Midsole for lightweight cushion underfoot and a Springfield Outsole for traction. Features of the Danner Men&';s Springfield 4.5IN Boot Durable, waterproof, oiled nubuck and mesh Upper DannerA(R) Dry waterproof protection Cushioning OrtholiteA(R) Insulation DannerA(R) Plyolite(TM) Midsole Nylon Shank DannerA(R) Springfield Outsole with Flex-X Technology provides stability and traction with minimal weight Electrical hazard protection ASTM F2892-11 EH.