Keeping your car’s interior cool is important during the hot summer months and year-round for sunbelt regions or for keeping ice and snow off your windows elsewhere. You can block 100 percent of the sun’s rays with the Cool Cap from Reflectionite. The products are designed to fit a wide variety of vehicles, including sedans, sports cars, sport utility vehicles, minivans and pickup trucks. Because the products securely attach on the outside, the company claims that the Cool Cap’s reflective material will significantly reduce much of heat entering the interior through the windows as well as the roof. Prices range from $70-$90. Order at www.itscoolinhere.com.