The effective sleep surface is only the middle 2/3rds of the matress. The outside 1/3 slopes downward, and wants to roll a back sleeper off the side.

The seams in the mattress are so deep the mattress feels lumpy. It also holds body heat, making sleeping all night impossible. Sore backs for 2+ months after switching to this mattress.

After test it for 18 months it's less firm than expected. I feel like when you stay in one position, the mattress adapts to your body's shape. It dips lower than expected, and I weigh 214 pounds.

helped allot with neck and shoulder pain I have when sleeping on less firm mattress

Firm and very supportive!

Excessive sagging on the side where I sleep. I am just 177 pounds. I wake up with aches and pains.

So far so good 6 months! Still breaking in…..

Just got it but I’ll report in a month.

Very firm... just what I wanted

It seems to be sinking already