Hi everyone, I've been eyeing the college bag. I don't like the sag and puffyness of the loulou nor the stiffness and structure of the envelope so I feel like the college is a perfect in-between. I like the shorter strap and roominess of the large but I'm afraid of sagging a lot with wear. The medium seems it will hold the structure better. Does anyone have any pictures of this bag with some years of wear. Thank you!