Men。* Enjoy the great outdoors even on cold-weather days with the warmth and protection of the KEEN Revel IV Mid Polar boots. This boot style uses environmentally preferred premium leather from an LWG-certified tannery. * Waterproof leather and performance mesh upper. * KEEN.Dry is a proprietary waterproof, breathable membrane that lets vapor out. * 200g KEEN.Warm Recycled PET insulation rated to -25°F/-32°C. * Traditional lace-up design with metal hardware for a secure fit. * Interior features treatment for natural odor control and a fresher foot environment. * Moisture-wicking lining for better breathability and a drier foot environment. * Thermal Heat Shield insole captures warmth to keep out the cold elements. * Compression-molded EVA midsole offer shock-absorption and padding for all-day comfort. * Stability shank for added support. * KEEN Patented Toe Protection wraps up and over the toes for ultimate protection. * KEEN.Polar Traction outsole for more grip on snow and ice.