Deluxe Solar Shield Reflective Mylar Sunshade eliminates and blocks most UV rays. Two layers of reflective Mylar plus foam insulation for greater protection. Helps protect your car's interior from extreme heat and harmful UV rays. Protects interior from excessive heat build-up while car is parked. Keeps you and your children cooler and more comfortable. Folds easily for storage, unfolds to the front windshield.