Deux Par Deux Winter Boots - SilverWinter Snow Boots with Warmth & Protection These boots feature a silver nylon upper and thermal rubber soles to keep feet safe and warm in temperatures down to 40C ( 40F). They include a short faux fur lining, comfortable foam insoles, and adjustable cords with barrel closures for a secure fit. Key Features Protects against cold up to 40C ( 40F) Durable silver nylon upper Thermal rubber soles for extra insulation Soft short faux fur lining Comfortable