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Customer reviews for Serta Perfect Sleeper X Knox Hybrid Mattress for
Serta Perfect Sleeper X Knox Hybrid Mattress
4.7 out of 5 stars
stars
264 ratings264 reviews
  1. 5 stars79% (208)
  2. 4 stars15% (40)
  3. 3 stars3% (9)
  4. 2 stars1% (2)
  5. 1 star2% (5)
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Showing 31-40 of 264 reviews
Mar 21, 2026
Reviewer name: Cari T
4 out of 5 stars
4 out of 5 stars review

Perfect Sleeper

This mattress will be “perfect” as soon as my back adjusts to the firmness. I do like the comfiness of the top layer and the mattress is supportive.

Review from Serta
Helpful?5QG9W3640AJR15251160390
Feb 25, 2026
Reviewer name: Allan C
5 out of 5 stars
5 out of 5 stars review

Great support and comfort for us side sleepers

So far our decision to replace our old Serta Icomfort Applause II was a good one. Very supportive, and provides a better night's sleep.

Review from Serta
Helpful?5QG9W3640AJR15251160390
May 29, 2026
Reviewer name: Daetrell L
5 out of 5 stars
5 out of 5 stars review

New mattress.

Mattress is very comfortable and price worthy. I do heavy construction for a living so my body is saying thank you.

Review from Serta
Helpful?5QG9W3640AJR15251160390
Jan 1, 2025
Reviewer name: CaseyAZ
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Supportive mattresse

Have been sleeping on the mattress for about 3 weeks. Me and my partner like different firmnesses. I am a side sleepersnd they are side and back sleeper. We got the medium firm with a pillow top and it comfortable for both of us. JE

Review from Serta
Helpful?5QG9W3640AJR15251160390
Nov 1, 2025
Reviewer name: Kathleen M
5 out of 5 stars
5 out of 5 stars review

New firm mattress

My rest test told me I needed more lumbar support with my arthritis. Been 12 years since we had a new mattress. It was time. Very tall though so have deep pocket sheets on hand. Glad I have bed steps.

Review from Serta
Helpful?5QG9W3640AJR15251160390
Oct 31, 2025
Reviewer name: Valerie M
5 out of 5 stars
5 out of 5 stars review

Best mattress ever!

Comfy, supportive, firm edges. I returned a Casper mattress and got this Perfect Sleeper X. Back pain gone after first night and I sleep through the entire night now!

Review from Serta
Helpful?5QG9W3640AJR15251160390
Dec 21, 2025
Reviewer name: Jasmin M
5 out of 5 stars
5 out of 5 stars review

Serta Perfect Sleeper

So far so good. I do like it better than my previous mattress which was more of a soft pillow top firm plush mattress. It was too soft and my back would hurt a lot. So I'm hoping this firm sleeper will do wonders but so far it feels great

Review from Serta
Helpful?5QG9W3640AJR15251160390
Jun 28, 2026
Reviewer name: Danielle J
5 out of 5 stars
5 out of 5 stars review

Raymour

Bought mattress in Watertown Ny from Raymour and it feels amazing, firm just like we like it

Review from Serta
Helpful?5QG9W3640AJR15251160390
Jul 10, 2026
Reviewer name: Noel E
5 out of 5 stars
5 out of 5 stars review

Comfy

Love the support and the foam is caressing!

Review from Serta
Helpful?5QG9W3640AJR15251160390
Jun 14, 2026
Reviewer name: Paul G
5 out of 5 stars
5 out of 5 stars review

Mattress

Firm the way, I like it and very comfortable

Review from Serta
Helpful?5QG9W3640AJR15251160390