Ordered and received with-in days so kudos to the vendor. Also got a two inch pad. Between the two the 3 inch is better if you are a bigger adult. I have a 4 inch pad I bought a few years ago which I like better as it is a higher rated memroy foam. At 5.5 you can tell this is memory foam, but it isn't quite up to the higher rated pad. For the price though it will revive an old or cheap matress and make it liveable. These various memory foam (vs just foam) have helped my back a lot and I would recommend these types of products. Thicker (3"-4") and higher density foam is better. (the two shredded pillows actually aren't too bad either which was a suprise.)