Please be aware that this is not in fact a memory foam mattress. It is made of foam but not the memory foam that you can press and see the imprint as it slowly expands. 
Another issue I have with the description is that it says the firmness is soft, however I found it to be quite a firm foam with little ‘give’. It isn’t uncomfortable but it isn’t the level of soft comfort promised by the misleading description.
The description also says that this mattress has great airflow qualities to maintain a comfortable sleeping temperature. Experience has proved this to be wrong as I have woken up several times from hot and stifling temperatures, which wasn’t a problem before this mattress.