Assembled in the USA, the USA Muck Boots Men's Chore Classic 16" Rubber Boots carries forward a legacy more than 20 years in the making. Built with high-grade neoprene and layers of premium hand-laid rubber, it delivers dependable protection through long days of hard work. Features100% waterproof, 100% MUCKPROOF5mm neoprene bootieBreathable mesh liningTriple toe and quadruple rubber heel reinforcementEasy to clean rubber overlaysDurable quick cleaning soleSteel shankbioDEWIX Dry with NZYM uses natural, plant-based enzymes that break down odor-causing material in sweat and keeps your feet freshASTM rated F2892-18 EH