I had a feeling I wasn't gonna like this mattress when stand it up and then it folds. The one I bought 10 years ago from overstock which was a serta stands up straight when I set it on its side . It was a much better mattress and it was only $* with the boxspring. I ended up keeping this just because I didn't want to deal with pick up and shipping. This should not be categorized as a firm mattress. PS I'm 5 foot two and 110 pounds.
I did a lot of research before choosing this mattress in medium. The Sleep Like The Dead site recommends a soft memory foam for light weight people under 130 pounds but being a 5'-6" 120 pound female I chose the medium. I was afraid if the soft was too soft there wouldn't be anything I could do to fix it but if the medium was too firm I could put a topper on the mattress. After sleeping one night with an ordinary mattress pad it was way too firm for me. I already had a 3" memory foam topper on my old standard mattress so I tried that for a few nights and it proved to be way too much and I felt like I was sleeping in a hole. I got a 1-1/2" memory foam topper and it is now perfect for me. I took it out of the box and wrapping immediately upon arrival and left it laying flat on my bedroom floor for a couple days waiting for the new box spring to be delivered. It took about 24 hours for it to regain its full shape but once it did it is all that it was advertised to be. There was a slight chemical odor that dissipated within that 24 hour time period as well. But the odor was barely worth even mentioning. All in all this was a great purchase.
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