I still don't wear a helmet. Never have.

I like feeling the wind in my hair... except I never get that because I always wear a broad-brimmed hat to protect myself from the sun. So why not wear a helmet? I agree that I probably should, zipping around at the speeds I do on my old beater.

I'm looking for a good helmet to protect my head from the sun.

So far what I've been able to find is this full hat brim that attaches to a helmet:

Da Brim :: Products :: Cycling :: Classic

And something that looks like a plexiglass visor.

They're a bit pricey.