This is our 3rd Spaldin mattress from Overstock in a year. The other 2 are Memory Plus queens. We have been updating all mattresses in the house. I wanted to try the Tubes mattress b/c of the cooling factor, although I don't really find the Memory Plus mattress to retain heat. I am very disappointed as my back is hurting on this one every night ! I am a back sleeper though, so maybe that is it. My husband is not complaining. The previous reviewer was correct when they said it is more firm, and does not really feel like a memory foam mattress. It needs more memory foam as the top layer. The price was so close to the Memory Plus, so if you are a back sleeper and like a more "plush" feel, I would definitely go with that one instead. (I love the Memory Plus by Spaldin !) Hopefully, one of the kids will find the Tubes mattress comfortable or we will sell it.