NIB KEEN Men's Revel 4 High Polar Insulated Waterproof Snow Boot size 12 No need to wait for someone else to make first tracks. We gave our waterproof winter boots for men a higher profile for deeper powder and our warmest insulation (rated to -40°F), plus better grip for snow and ice. Made with waterproof leather and performance mesh upper, the men’s Revel 4 High Polar Boot is built off KEEN's traditional wider footwear form. KEEN products are consciously created using a natural, pesticide-free probiotic-based technology called Eco Anti-Odor for breaking down odor in sweat, PFC-free water repellent (in applicable styles) and leather sourced from Leather Working Group (LWG)-certified tanneries. KEEN makes shoes to make a difference. From the products it makes, to the actions the it takes, KEEN inspires people to live and work monumental every day. As a brand born for life outside, KEEN has a responsibility to protect and conserve the places where all people live, play and work.