I have a Bell shaped head. Tried Giro, no luck. (Sweetie has a Giro head.) Bell Citi is my favorite helmet. $48. Hot screaming lime-yellow. No faux-aero pointy bit at the back to catch on the pavement and snap your neck when you crash. Nice visor, keeps the cooties out of the eyes when riding. Reflective tape all over the place, including the straps.

Helmet hair is sexy.

"If you won't wear a helmet, then I won't wear a condom."