It's not aluminum foil, it's something like plastic leather if I can describe it correctly. Not only does it not do the job, but due to the temperature it had reached, I barely managed to take it out of the car because I couldn't even hold it! Due to the material it is made of, it wrinkles immediately, resulting in it not standing at all and having to adjust it 2-3 times to put it on correctly and straight. Unfortunately, when I bought it, the packaging (a nylon one) had it inside out and I couldn't see what material the outer side was, so I bought it because it was more expensive than the previous one I had, so maybe it would be better! My opinion is give 10€ more and get a half hood, because the job this one does is nothing!