Thermal Heat Shield insole captures warmth • KEEN.WARM Recycled PET insulation rated to -25°F/-32°C • Elastic gore for easy on & off • Breathable textile lining • Compression-molded EVA midsole for cushioning • Eco Anti-Odor for natural odor control • KEEN.Polar Traction outsole for more grip on snow and ice • Non-marking multi-directional lugs for increased traction • 5mm multi-directional lugs for traction • Stability shank delivers lightweight support • Environmentally preferred premium leather from LWG-certified tannery • KEEN.DRY waterproof, breathable membrane • Original Fit–Iconic KEEN fit with generous space across forefoot for toes to spread out • Waterproof full-grain leather upper.