The Keen men's Pyrenees Waterproof Hiking Boots combine a robust leather construction with modern, high performing technology. Boasting a classic lace-up design, they feature a waterproof Nubuck leather upper with a KEEN.Dry waterproof breathable membrane that lets vapor out without letting water in so feet stay dry and comfortable, while a metatomical footbed is engineered for excellent arch support. Additionally, extra cushioning is provided by a moulded EVA midsole, and optimum grip and traction is assured with a non-marking rubber outsole and 4mm multi directional lugs.   Care Instructions Gently brush the footwear with a soft bristle brush or hand towel to remove loose dirt and debris. Stains can be treated by lightly rubbing a gum eraser in a circular motion over the location and lightly brushing afterwards. Tough stains can be treated with a mixture of water and a little vinegar on a damp cloth. This process may cause slight discoloration to the area though.