Have been thinking long bag which size should I choose and have to say that I have met with the X12 is the right choice. It is by no means over-sized, but just right to get everything under (eg, tennis shoes, 2-4 rackets, towels, shower stuff and clean clothes). The only quirk of mine is the imprint which was slightly damaged when I received the bag. Probably somehow during transport. The white Babolatschrift the already somewhat flaking. An otherwise I'm really very happy with this bag. It is also very comfortable to wear as "backpack".
