so my right shoulder (im left handed) and right back have been killing me from weekly runs for cases of beer etc. I want to move to a backpack 3500 cubic inches or there abouts, but i want a bag that i can use as a daily carrier . the great thing about messenger bags is that they hold alot, and when they arent holding anything, they compress.

if people could post their pics of their backpacks compressed (using the straps they came with etc) id appreciate it. i have looked through a dozen threads and the emphasis always seems to be around the bags when they are full