Sealy 8" Essentials Memory Foam Mattress (Open Box)

From the beginning as soon as the mattress was out of the box and started to gain volume I realized it was not the one I’ve ordered so I tried to returned it but they expected that I return it inside the original box which was already imposible so I canceled the return and decided to keep it but it was also defective and never gain it’s supposed volumen which was 12”, one corner of the mattress reached 8”, 2 corners have reached 11” and the other corner 10” , I also read internet information to see what else I could do and I did everything, even massage it and keep inside a room really warm but nothing worked , this is a defective mattress which I couldn’t return. Don’t buy it.