The agility of a light hiker with the warmth of a puffy coat. Keen® built Revel IV Polar Winter Boots for women with active, frigid days in mind. With 200g of insulation, heat-trapping materials underfoot, and exceptional grip on snow and ice. Waterproof Leather and performance Mesh upper Environmentally preferred Premium Leather from LWG-certified tannery Breathable textile lining Thermal Heat Shield insole captures warmth KEEN.WARM Recycled PET insulation rated to -25°F/-32°C KEEN.DRY waterproof, breathable membrane Eco Anti-Odor for natural odor control Compression-molded EVA midsole for cushioning Stability shank delivers lightweight support KEEN.Polar Traction outsole for more grip on snow and ice Non-marking multi-directional lugs for increased traction Product Features: Insulation:200 g KEEN.WARM Recycled PET Waterproof:Yes Upper:Waterproof Premium Leather; Performance Mesh Lining:Breathable Textile Comfort Range:Rated to -25°F/-32°C Outsole:KEEN.Polar Traction Rubber, non-marking, with 5mm multi-directional lugs for increased traction Midsole:Compression-molded EVA (Ethyl Vinyl Acetate) Cushioned Foam Support (shank):Stability Insert:KEEN.DRY waterproof, breathable membrane Keen Women's Revel IV Polar Boot