I was skeptical about this bed but since we move every 2 years and are limited to the weight we can ship overseas, I thought we'd give it a try. I was not disappointed. This bed is ridiculously comfortable and despite what other reviewers have said, I've not noticed any smell. I bought the medium firm bed and it is perfect. My first night in my new house and it was 90 degrees (no ac yet) and I really didn't notice that the bed made me any hotter than a normal bedI am very happy that they make these in XL twin as well. I've just ordered two more for my tall teens.