As a concession to my wife's request, and common sense, I have been wearing a bike helmet more than I used to. At the same time my hair has gotten a lot thinner. I have started to notice a really funny tan pattern on my head from the vents in the helmet. Tried to wear a ball cap under my helmet, won't really work. Put on my thin toboggan under the helmet, great in the winter but brutally hot in the Florida sun this time of year.

Just curious if anyone else has an easy solution, other than just having a helmet tan?

(Although I guess if this is my biggest problem today then it's a pretty good day!)