Agreed with leamb. I think the structure of the bag kinda gives it away - my Baobaos 'collapse' a lot more and basically folds into itself when empty. The bag pictured looks pretty stiff and doesn't crumple as much. You may want to Google for pictures of the Baobao Rock for comparison. An authentic Baobao would also come with an authenticity card stating (handwritten) the date and outlet of purchase.
I recently bought a bao bao, the prism one made of smaller triangles that molds more than the larger triangles, the lucent one. I believe your bag is real because the hardware has the bao bao label on it.