Balls bounce off
Not hot at all
the paddings fell off right when I got it
I love this mask, I bought a package of a Spyder TL, coming with a non brand paintball mask, once I put on the Pro flex, it was amazing, you can turn your head sharply, see clearly. The paddings fall off easily, easily fixed though. Use super glue. Very light, tight enough to stay on your head but not tight enough to cut off the blood flow to your brain. No plastic parts dig into your head.
I recommend this product over most. I havn't tried all of them, but I can say this is the one for me. I have a fat head and it fits nicely, my friend has a small head and it fits nicely. For $80 it's perfect.