This is definitely not an extra firm matttress as advertised. During the first months we had it, it was fine, but now, not even a year since we bought it, the mattress is extremely soft, we feel like we sink in and it is causing us severe backpain and my husband and I wake up in the middle of the night to go sleep on our recliners. Also, there is no support on the sides, it seems we are going to fall from the bed. We contacted the company, but according to them the “depression” we have doesnt qualify for a replacement. This is our first and last experience with Beautyrest- we are very upset with the poor quality and replacement standards.