Originally Posted by
Trakhak
Among the early Snell-approved helmets, the MSR Research version didn't have much ventilation. But the Bell Biker had several large vents front and back. more than any hockey helmet of the era.
Maybe you're thinking of the Pro-Tec helmet, although that used spongy foam rather than expanded polystyrene and thus was not approved by the governing agency (the USCF, I think) for racing use.
Yeah, the hockey helmets had thin, spongy foam inside. They were from the days when helmets were optional in hockey, but my grandpa made my uncle wear one anyway.
They had small vents everywhere, as I recall. More for letting sweat vapor radiate out than a constant airflow coming through.
Would've been a lot better than whacking our heads without them, though.