Spotted on FabSugar:
This is potentially very very useful. This bag features vertical zippers so you can remove sections to adjust the length. It can carry a yoga mat (which will be useful when I get round to picking up yoga properly - which I plan to in university), it can carry posters or oversized documents or canvas (which would be useful if I were an art student or something) or tripods (if I owned lots of fancy camera equipment) or just function as a small travel purse (if I needed more of those). So, um, it may not really be practical for me but given that it's fantastically multi-purpose, lightweight and it looks quite cute, it could be a very good investment for some college girl out there. Only thing is, yoga mat's not included. Which makes it slightly pricey for a yoga mat bag at $55.95.
If all this works out for you, get it here at the MoMA online store.