Post by Cats (Doom) on Jun 11, 2014 22:26:40 GMT -5
They are not full seal without the vents. Event hosts also frown on modified goggles and may declare them unfit; its their right. That said, I have seen literally dozens of players over the years run without the vents at MiA events without any host complaints that I'm aware of; I also have modified mesh vent replacements on both my flakjacks. Just be aware that if you don't have the vents you are engaging in an unsafe practice.
“...divisiveness is corrosive to a game that’s based on sportsmanship" Glen D. Nager, president of the USGA.