I brought this bag at a comic-con convention a year ago or so. I think I payed $40 for it originally.
I think its made from PVC or flax leather. I don't know much details about it to be honest. its a good little bag, has adjustable strap.

size: 

width/across: 19cm/7.5inch
length/down: 25cm/10 inch
book spine width: 6cm/2.5 inch
comment if any further questions :)
sorry guys I will update photos and get a clear snap shot of front of the bag asap.