I've been on my bicycle so much that I'm starting to realize how much I despise my cross-body messenger bag. As a lady (and a rather small-chested one, even), the strap just isn't comfortable on my boobs. So in an effort to retire my patch- and mud-covered Timbuk2, a new roll-top backpack is the top at my June wishlist.
Cyclist ladies: what type of bag do you bike with?