HEAVY DUTY & FOUR LAYERS: The car windshield cover is made of 4 layers - PEVA Aluminum Foil, Spunlaced Cotton, Composite Cotton, Soft Non-Woven Lining. Ulter think and heavy duty to keep the windshield clean & clear, help blocking the car wiper area from filling with leaves and pine needles. SUMMER & WINTER PROTECTION: Summer - Blocking out nearly 99% of UV rays , help to turn down the temperature during hot & sunny weather. Winter - -50C low temperature resistance. It can prevents frost/snow/ice build up on the windshield in the winter and reduces the time spent scrapping ice or snow in the mornings. 2 SIZES FOR MOST CARS: Two Available Sizes Fit 99% of Vehicles - The standard size (140x90cm) fits for Cars and SUVS and the X-large size (145x100cm) fits for SUVs Vans Trucks Minivans. (Please measure your vehicle prior to purchase to ensure your cover fits) EASY TO INSTALL: Easy & convenient to use, No tool required for installation. Secure with side flaps design, prevent from falling off. (SILVER SIDE UPWARDS) MULTI-FUNCTIONAL: It is not only a windshield cover - It can be used as camping table mat, tent sleeping pad,pets sitting car mat in your car and crawling mat at the outdoors.