Outside Car Front Windshield Cover Accordion Auto Windshield Sun Shade Snow Shade 59"x27" Size:59"x27",(2 Ears:3") Use on outside of the front windshield ,just put the ears in the interior of the car door ,and shut the door A special metallized polyester film, laminated to a thin layer of closed-cell foam, with a clear polyester film back Once installed, Heat Shield will reduce the interior temperature at the dashboard by as much as 40 deg. F. (25 deg. C.) Rolls up with a velcro tie when not in use