How exactly do you use the cross strap "properly"? I am just fitting it to my body, without any slack and without it being too tight. I'm not sure what else to do.
I wear the bag flat on my back like a back pack when I'm riding my bike (which I think is how you are suppose to wear it). I'm towing several pounds of books everywhere I go, but I don't see why it would be more painful on this bag as opposed to a regular back pack. After a few more uses of this bag, I'm going to need reconstructive surgery on my collar bone unless I figure out how to get it to be comfortable.