So I'll be started school again in a few weeks, and I've been looking at backpacks that would be better for commuting. There are a couple I had in mind, like the Osprey Radial 34 and the Momentum 32. However, there are issues about both bags that concern me, particularly the elastic cords that would have to hold up the weight of a fully loaded bag. They both have some really nice features, such as an integrated rain cover, and a spot to attach a helmet when not in use.