The KEEN Men's Revel IV Chelsea Boot is a slip-on boot for going anywhere in winter weather. Easy on blended with simple style makes this boot a go-to when you're headed out the door in the cold. No worries about the frigid temps, it's rated to -25°F thanks to a substantial 200g of KEEN. WARM recycled P.E.T. Insulation. Not only will your toes be warm, the KEEN.DRY waterproof, breathable membrane ensure feet also stay dry. Snow and ice can be tricky to walk upon but the KEEN.Polar Traction Outsole helps you dig in for proper grip and no slip. Features of KEEN Men's Revel IV Chelsea Boot KEEN.DRY waterproof, breathable membrane keeps your feet dry in wet terrains KEEN.ALL-TERRAIN rubber Outsole for Higher-traction grip when you need it Contoured heel lock holds your heel in place for a more secure footing Compression-molded EVA Midsole for enhanced cushioning KEEN.WARM Insulation helps keep feet warm in temperatures down to -25AdegF/-32AdegC KEEN Luftcell PU insole is used for long-lasting comfort right out of the box External stability shank offers lightweight support for improved mobility