Originally Posted by
dougmc
I realize this is a rhetorical question, but the answer is "yes, some do".
A straw hat or sombrero will keep your head cooler -- it does this by providing shade but being still porous enough to allow decent air flow as well.
If a helmet is designed to provide good shade but not restrict air flow much, it could help keep your head cooler. I don't recall ever seeing a bicycle helmet that didn't restrict air flow much (even with all the big air vents, which reduce the shade factor as well), but it could be done.
Hm, yes, all very true about the wind flow if the helmet has the same frontal area as your forehead, it however does not.
If you guys think not wearing a hat under the summer sun doesn't keep you cool then you've got some ulterior motives.
That wouldn't surprise me.