Intro-Tech BM-49-R Ultimate Reflector Custom Fit Folding Windshield Sunshade for select BMW M3 Models, Silver Return to a cooler parked vehicle, including steering wheel, gearshift and seats Hi-tech, incredibly reflective Mylar and multi-layered heat barrier materials can prevent heat build-up as much as forty degrees Fahrenheit Reversible for winter usage, the Ultimate Reflector custom folding auto shade when reversed, acts like a thermal blanket; the graphite protective felt makes it reversible for winter use Unfolds and installs in seconds, stores in its own leatherette storage bag Designed to fit the inside of your specific vehicle windshield