Made of Reflectix, Heatshield insulating curtains do as much to prevent heat from entering the vehicle on hot summer days as they do to insulate windows and retain interior heat on cold nights. They offer an average temperature difference of 11° C between the outside and the inside of the vehicle. Custom made and laser cut to your vehicle's window dimensions. Silver exterior and white interior. The side window curtains have suction cups to securely attach to the windows. All curtains roll up and have a velcro fastener, for more compact storage! Made in California.