Nautilus Men's SD Wp Oxford Leather Full-Grain Nubuck Waterproof Leather upper Removable Anti-FatiguePolyurethane Insole and EVA Midsole for Maximum Comfort with Rubber Slip- and Oil-Resistant Outsole Highly Durable, Slip- and Oil-Resistant Stabilizer Outsole Seam Sealed Waterproof Construction Meets or Exceeds ASTM 2413-11 Impact/Compression and SD Ratings