Originally Posted by
Greyryder
I wear a park/skate style helmet on MTB trails. The ventilation is pretty minimal. It's rare that I actually feel any air moving through the vents, but I've got an awful lot of hair going on. I doubt I'd feel anything through the vents on typical road style helmets, either.
During spring fly season, I get a lot of bugs through my vents. They get in, they get trapped, they buzz around and sometimes they bite. Vents are not always a good thing.