I own a OnePlus One with the Bamboo back and as most people already know, it's actually quite thicker than the normal sandstone black and silk white backs and also a bit heavier. Because of this, most cases won't fit. I already tried putting on a naked clear case but my phone was too thick. Hopefully others with the Bamboo back could post here what cases would fit so we can put together a sort of list of confirmed cases that fit the Bamboo OPO.