Stops slap shots without a mark - no fog

I've taken a slap shot to the face in an adult hockey game with this shield with absolutely no mark, no scratch. I used some aftermarket clamps to connect it to me helmet, which both broke, but no damage to my mask. Kinda repetitive of other reviewers, but I'm obsessive over no fog, and this does the trick. I usually put hockey spit (fog remover) on it before every game, but I have gone without using it with no problem,

Stops slap shots without a mark - no fog

I've taken a slap shot to the face in an adult hockey game with this shield with absolutely no mark, no scratch. I used some aftermarket clamps to connect it to me helmet, which both broke, but no damage to my mask. Kinda repetitive of other reviewers, but I'm obsessive over no fog, and this does the trick. I usually put hockey spit (fog remover) on it before every game, but I have gone without using it with no problem,