This is a great mattress for the price! It fits nicely on my existing box spring, it expanded to its permanent size within a few hours and the "new mattress" smell went away within a few days. It's a comfortable mattress but it's a little softer than I expected. It doesn't seem to have the pressure point support that my more expensive memory foam mattress has, but hey, for the price, you can't beat it. The only other downside is that the mattress slides around on the boxspring very easily. I have to reposition it every morning.