Originally Posted by
GovernorSilver
I didn't notice much of a difference in hot weather riding between my Bern (different models have different numbers of vents, different vent placement, etc.) and the racing style helmets like the Giro or Feature.
When it's 90 degrees and humid you're going to sweat no matter what helmet you wear.
You should try a Catlike... the big and numerous ventilation tubes can be so noisy at speed that it sounds to you like you are wearing a hair dryer!