The mattress is super firm and comfortable. I am happy. I recommend for people who have joint bone problems and especially the back

When I first got this replacement, it was great, and now, for the last four months I've been dealing with a sink hole and is killing my lower back.

Once I lay down to sleep, I fall to sleep immediately and sleep the entire night. It is very comfortable and no aches or pains. I am totally happy and satisfied with it

This mattress starts out firm at first but after a few nights sleep is very comfortable. I normally sleep on my back and it’s very supportive of them mid to low back and cradled your body!

Having slept on our new Serta Perfect Sleeper X Hybrid Knox Plush Cal King for two nights has been wonderful. Supportive and comfortable for much needed good night sleep.

I’m a side sleeper and was looking for a firm mattress that would not make the pressure points in my shoulder and hips hurt. This hybrid mattress has been perfect for me!

Very firm but comfortably supports my spine after two surgeries. I go right to sleep without tossing and turning like I did with my previous mattress.

It feels so good to wake up refreshed!

Very firm mattress. Helps with my back pain

Comfy and exactly what we were looking for!