I gotta say, I’m a big fan of those car sun shields, especially living down here in Florida where it’s sunny like 300 days a year. Seriously, it makes a huge difference. Last summer, my buddy and I compared our cars parked side by side, mine with a sun shield and his without. Getting back into mine was like stepping into a cooler room, not the usual oven. Plus, I’ve noticed the interior of my ride looks better than his, which is the same age. So yeah, from my experience, those sun shields are the real deal for keeping the car cool and protecting the interior.