this topic was in the newspaper the other day, how only 40% of the commuters by bicycle were women, and how the city wanted more women participating.

The next day in the Ops/Ed section, a reader commented along the lines of women not cycling because they have childcare before and/or after work, and another reason she said was that she didn't want helmet head. We can scoff at that, but to some it's important to not look ruffled at work.