HEAVY DUTY & FOUR LAYERS: The car windshield cover is made of 4 layers - PEVA Aluminum Foil, Spunlaced Cotton, Composite Cotton, Soft Non-Woven Lining. Ultra thick and heavy duty to keep the windshield clean & clear, helps block the car wiper area from filling with leaves and pine needles. SUMMER & WINTER PROTECTION: Summer - Blocks nearly 99% of UV rays, helps reduce the temperature during hot & sunny weather. Winter - Withstands temperatures as low as -50°C. It helps prevent frost, snow, and ice build-up on the windshield in winter and reduces the time spent scraping ice or snow in the mornings. 2 SIZES FOR MOST CARS: Two available sizes fit 99% of vehicles - The standard size (140x90cm) fits cars and SUVs and the X-large size (145x100cm) fits SUVs, vans, trucks, and minivans. (Please measure your vehicle prior to purchase to ensure proper fit). EASY TO INSTALL: Easy and convenient to use, no tools required for installation. Secured with side flaps design to help prevent it from falling off. (SILVER SIDE UPWARDS) MULTI-FUNCTIONAL: It is not only a windshield cover - It can be used as a camping table mat, tent sleeping pad, pet mat in your car, and crawling mat for outdoor use.