Built with active, frigid days in mind, these KEEN Women's Revel IV Polar Boots waterproof winter boots for women are equally at home snowshoeing on a recreational trail or working at a demanding outdoor job site. They're lined with lightweight KEEN.WARM recycled PET insulation that's rated to -25° F and retains its effectiveness if it becomes damp. The KEEN.POLAR TRACTION rubber outsole features microscopic shards that dig into terrain to provide exceptional grip on icy surfaces even on an incline.