Maybe. The Kriega US25 is right in the middle of the Kriega lineup at 25 Liters. It's not waterproof, but it offers a nice midsize that doesn't feel too big on my frame. I always feel like a little kid if I wear something that's way too big on me. I just bought this last week and will be commuting with her to see how it feels on the bike. Click here for a full overview of specs and features. $189.
Nifty. Check out this video from the Dainese Store in San Francisco about their backpack that carries your helmet and your laptop! How many of us ride to work with laptop in tow? *raises hand*.