You will look great and your feet will feel even better when you're wearing the Muck Boot Refresh Round-Up Boot. Made of durable, 100% waterproof full grain leather, these boots are made for tough environments. Optimal warmth and comfort comes from the 4mm neoprene insulation that allows you to wear these all-day long without the fear of cold feet. If the temperature starts to rise, you can count on the XpressCool lining material to pull moisture away from your feet and spread it across the boot, keeping you feeling cool and dry. The wide-cut heel base provides maximum stability when you need it most. Imported.