Review (4/5): As advertised, and so far, good enough.
I normally prefer to buy items that last (as opposed to frequent buying and disposing/waste); yet by the nature, design and availability of bath pillows, it didn't look like I'd find such a product merely by paying more money. Having read a number of reviews about similar products (perhaps the same one under different marketing), I didn't expect to be wowed by this one. I'm also going to be very cautious about moving the pillow once the suction cups are set, as critics have complained (in similar products' reviews) of air leaks when the suction cups were pulled out of their holders.
My package arrived quickly, and I used it the next day and a few times since. It is much as expected and advertised, a fairly basic PVC (or similar) inflatable, with good suction/adhesion to my over-sized jetted oval tub. So far so good. If it holds up under careful use, I'd call it a good buy at the $10 I paid.
UPDATE 2016 Sept.: About 8 months after receiving it, he bath pillow is still intact; though it should be as it hasn't received rough handling. So I've upgraded it to 4 stars.