WeatherTech TechShade Windshield Sun Shades offer a custom fit for various make and model vehicles for all seasons. These interior windshield sun shades have a two-sided design, with a silver reflective film that chases the sun away in the summer to keep you cooler and on the reverse side, the black material absorbs the heat in the cold winter months to help prevent frost buildup. Unique, patented suction cups aid in the SunShades' installation, securing it's placement on the windshield. And when not in use, just remove the shade, roll it up and fasten it with the Velcro strap