Excellent product! I conducted over 80 raids in Iraq and these goggles NEVER fogged up. I used another brand that had an electric fan, and they fogged up at different times--usually at the worst possible moment. The only con of this product is the small gap between the lens and the goggle frame that allows this goggle air to keep from fogging up will sometimes let debris in when conducting air assault missions. It was a trade-off I was willing to take and would just squint as the helo would take off. Better than having to remove the goggles because they are so fogged up you can't see!
Pros: NEVER fogged up. Excellent field of view.
Cons: Some debris will get in your eyes on Air Assault Missions from rotor wash
This review was written in the old system and had content requirements that are different than reviews written today.