For me, awesome. - Smith Boogie Regulator

OK, I used these in a two-gun match this weekend where I used my suppressor on my AR-15. Conditions: it was 86 degrees and 82% humidity, mixed sun and clouds, 10mph wind. I used them from 9:30 AM to 1:30PM.

Firstly- they accomplished my first need, to stop the blow-back from the suppressor from reaching my eyes.
Secondly- They did not fog at all. I had the top vent all the way open. I do admit I am not a "sweat machine", but I do sweat and did get very hot. I highly recommend these. Several others running cans asked me about them and even commented that they saw no fog in them.

The only thing I can say negative about these is that the strap is entirely a rubber-plastic and was somewhat uncomfortable after 3 hours. I strap that is wider back by the ears and a softer elastic would be better I think.