I weigh 150 lbs and have used this mattress for only 5 weeks. It is already unusable on the side I have been sleeping on.
The mattress is uneven and has several areas which sag 4 to 5 inches under the weight of my body. I need an extra firm mattress for my aging back and this one is simply awful. I have never had a mattress feel so uneven and unsupportive in so short a time. Macy's is sending a technician to evaluate the mattress, but I'm going to exchange it for another brand whatever their charges for returning the mattress. Worse experience with a mattress in my 67 years.