I believe its the medium size bag. At this point I am getting so confused because this SA is great and sending me multiple pictures. You're welcome.Thanks for those pictures! I was just debating on which color MCM backpack to get. I can't get into a store tomorrow until late in the day so I plan to order it online in the AM. I like the pink, but am not 100% sure about it for me...may end up with the black one!