Here is me trying the third size (small?) in the store, it looked like a khaki colour. It definitely felt more supple than the medium one.
ETA: you can see some nanos sitting on the desk in this pic.
And another one in the elevator with my bag. It's the second smaller one, in grey (baby size?). I almost bought it in nude/beige. I'm glad I didn't because I'm noticing a little colour transfer from wearing the bag with jeans!
I'm 5'6 and fluffy
All in all I love the bag, the only negative is that it's quite heavy!
The nano ones looked very slouchy, and so cute!