The Bell Sweep is for you if you have a "Bell Head". I tried Giros, but they never quite felt right. I ran into an engineer for Bell one day and he said the fits are different for the 2 brands (Bell and Giro are apparently owned by the same company). That having been said, I love the Sweep - it is light, comfortable and easily adjusts. The visor is generally off for me since I ride on the road, but the idea of a dual purpose helmet makes great sense. I have not had drying issues, but I ride it in Utah with no humidity, so that probably helps.