The mattress is very firm, which I at first was unhappy about. However now, after several months, I am very glad I chose it.

Our new Serta mattress and box springs are very comfortable and supportive (for my bad back). This mattress is very well made.

I was looking for more support something not too hard and not too soft and I settled for the plush and it’s perfect!

Perfect Sleeper. We're able to sleep at night. Very satisfied with with our back problems. Problem satisfied, very firm comfortable.❤️👌

I love the Serta Knox firm mattress! Even though it is firm, it is comfortable and I can sleep without any issues.

The mattress already has divots or impressions from where we sleep in less than two weeks. We are not overweight.

Hoping it will soften soon

Great for a restful sleep

Very supportive mattress. A restful night sleep.

Comforting for a very relaxing sleep.