man save your *** and get a full face. i have 2 different vents up front, one at the top of my head, and a heat extractor in back. you would be VERY surprised how much air they can let it and you can shut it off too if its chilly. they have some cool lookin ones too. safe than sorry

 

I wear a half even after getting hit by a car. Sometimes I think of going to a 3/4 but I just prefer a half.

 

I wear a half lid, carbon fiber/kevlar helmet.&nbsp\\; Even though it isn't DOT approved, it did pass all of the DOT impact standards (foam isn't thick enough to get the sticker).&nbsp\\; It's the only helmet light enough and comfortable enough for me to wear regularly.... Clearly not as protective as a full face helmet... But it is the sleekest lid on the market, that still provides some protection.&nbsp\\;
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http://www.carbonfiberhelmets.com/
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Daytona Skull Cap Carbon Fiber. DOT approved. I figure if I'm gonna wear a helmet it may as well be DOT approved. Otherwise I ride around with a ball cap, bandana or doo rag.
Teek

 

I wear a full faced arai. Dress to crash not to ride.