Okay, it has been over 100 degrees here every day since I got my new bike. Of course, the new bike still demands to be ridden - regardless of the temperature! For the most part, I can cope with the heat, but when I'm climbing a hill (...got lots of those here in Austin...) the extra exertion causes my temperature to really spike and I can barely cope.

Since I refuse to accept that I may be a wimp, I'm partially blaming the problem on poor ventilation by my old Giro Gila helmet. I've read a lot of good reviews about the Giro Ionos ( http://www.giro.com/us_en/products/c...FZFY7AodI3ZRxQ ) , and the Specialized S-Works and Propero ( http://www.specialized.com/us/en/bc/...1009&scid=1018 ) look like they would be well ventilated. Anyone have any experience with these models?

I'm open to suggestions, but I have found that Bell helmets just don't fit me -they seem to be made for round heads, and I have a sorta oblong head. Thanks.