Keen Kaci Winter II Kaci Slip-On shoe with flannel detail. Gray. Higher-traction rubber outsole 100g of KEEN.WARM insulation rated to -4°F/-20°C Stability shank delivers lightweight support Environmentally preferred premium leather from LWG-certified tannery Eco Anti-Odor for natural odor control Original Fit–Iconic KEEN fit with generous space across forefoot for toes to spread out MATERIALS Premium leather upper Elastic gore for easy on & off Fleece lining for warmth Removable PU insole for long-lasting comfort