Ultimate Automotive Sunshade. Return To A Cooler Parked Vehicle. Incredibly Reflective Mylar and Multi-Layered Heat Barrier. Prevents Heat Buildup as Much As Forty Degrees. Designed To Fit The Inside Of Your Vehicles Windshield. Prevents Costly Dashboard Cracks And Fading. Unfolds And Installs In Seconds. Stores In A Leatherette Storage Bag. Finished w/Non-Abrasive Velour Binding. Reversible For Winter Use. Lifetime Warranty.