Please forgive if this is a well known subject. I have to park out of my garage for a while and live in a warm area. I went to NAPA and bought a solar shield that said it was good for the Prius, but it doesn't fit well at all. I want to take it back and get one that fits instead. I have a Gen 4 Touring and was just wondering which of the many sun shield products available fit well in the Prius? Thanks.