Men's Alpha Evolution 17" Gray Sky 1600G

Tough. Versatile. Built in the USA. Ready to cross frigid streams, stand tall in the trees, and tackle chores in the backyard, our USA-built Alpha Evolution is the outcome of over a hundred years of experience crafting durable, hardworking rubber footwear. It’s outfitted with a Vibram® outsole and premium features for long-lasting comfort, waterproofing, and durability. SPECIFICATIONS Style 376213 Weight 6.4 lbs per pair Height 17" Color Gray Sky Insulation 1600G Primaloft Closure Slip-On Manufacturing Made in USA with Imported Components Liner Jersey Lining Waterproof Shank Fiberglass Footbed Polyurethane Outsole Vibram Alpha Traction Country of Origin United States MADE IN USA WITH IMPORTED COMPONENTS We source the best materials from around the world. Partial boot construction is done overseas and then shipped to be completed in our Portland, Oregon factory. Once in our factory, the boot uppers are prepared and attached to the outsoles. We then treat, clean, inspect, and waterproof-test them. This manufacturing process allows us to offer premiere rubber styles made in our USA factory. PRIMALOFT® AEROGEL TOE CAP Used by NASA to insulate space suits, Aerogel is the world’s lightest solid comprised of more than 95% air. This toe cap provides superior insulation with minimal bulk or weight and doesn’t pack down over time. ALPHA CONSTRUCTION Built with hand-laid premium, natural rubber over insulating neoprene for durability, flexibility and complete waterproof protection. 1600G PRIMALOFT® INSULATION PrimaLoft® Gold Insulation performs in wet or dry conditions and maintains its thermal properties no matter how many times you wear your boots, making it the go-to choice for insulated footwear. MADE IN USA The Alpha Evolution is the outcome of over a hundred years of experience crafting durable, hardworking rubber footwear — and it’s proudly made in USA with imported components. NEOPRENE GUSSET Durable, neoprene gusset accommodates different calf sizes and makes it easy to slide the boot on and off. EVA MIDSOLE We use a rubberized EVA midsole that delivers superior cushioning and shock absorption underfoot. VIBRAM® ICETREK The soft, rubber compound in Vibram® ICETREK allows for superior grip and traction on ice, snow, and other cold terrain without damaging interior surfaces such as flooring.