Magnetic Windshield Cover! Windshield Cover Holds Securely to Car with Built-in Magnets. Heavy-duty plastic windshield cover holds securely to car with built-in magnets. Keeps windshield free from snow, frost, bugs, bird droppings, tree sap. Keeps interior cooler in summer, too! 7' x 3' cover folds to fit in glove compartment. Its the protection that every one needs!