This Soft Support 10-inch Twin-size Memory Foam Mattress and Bonus Pillow Set have not lived up to expectations. One, the pillow never expanded (it is still just as flat as it was when I opened the box). Two, the corners of the mattress did not expand to the same height as the rest of it. Three, it is a little soft for my taste (I know it says soft support, but I was not expecting to sink in as far as I did). I myself prefer firm mattresses, but I got this mattress for my 3yr old daughter and she doesn't weigh much; so hopefully it will be fine.