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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
250 ratings250 reviews
  1. 5 stars79% (198)
  2. 4 stars15% (38)
  3. 3 stars3% (7)
  4. 2 stars1% (2)
  5. 1 star2% (5)

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Showing 101-110 of 250 reviews
Oct 19, 2024
Reviewer name: jenny856772
5 out of 5 stars
5 out of 5 stars review

Firm support, yet comfortable

[This review was collected as part of a promotion.] This mattress is firm and provides strong support. We lay it on the ground to sleep to nurse our newborn. You can lie down or getup without rocking it or disturbing each other. High quality mattress and well constructed.

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Feb 23, 2025
Reviewer name: Mattori
1 out of 5 stars
1 out of 5 stars review

Bad quality

I just started sleeping on this mattress and it has a horrible bubble in the middle. This is the cool calming queen mattress. It's a replacement for a different mattress from serta and it only lasted 6 months before the sides started caving in. I will never buy a serta mattress again.

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Feb 12, 2025
Reviewer name: Guillermo Z
5 out of 5 stars
5 out of 5 stars review

Best Sleep Ever

We got a new mattress and after much deliberation, went with a Serta. We have no more back or hip pain when we wake up in the morning, it has great support, and I haven’t slept this great in years. Another thing that impressed me was the attention to aesthetics; the embroidered flowers on the mattress top are lovely. Thank you Serta!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Sep 9, 2024
Reviewer name: bbyjayy
5 out of 5 stars
5 out of 5 stars review

Definitely LOVE!!!

[This review was collected as part of a promotion.] At first I was skeptical to receive a mattress to review however I am truly blown away by the quality and comfortability! I went from total memory foam to this and it has truly made a different in the support on my back! I can also tell the different with their cooling technology! I feel blessed and extremely grateful for this opportunity!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Dec 12, 2025
Reviewer name: Debbie H
5 out of 5 stars
5 out of 5 stars review

Comfy!

Nice and firm, very comfortable and I do not want to get out of bed!!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Sep 28, 2025
Reviewer name: Stephen m M
5 out of 5 stars
5 out of 5 stars review

Great mattress

Comfortable and supportive!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Nov 29, 2025
Reviewer name: William H
5 out of 5 stars
5 out of 5 stars review

Noce bed

Bought it with an adjustable base. Seems comfortable

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Sep 30, 2025
Reviewer name: Vincent W
4 out of 5 stars
4 out of 5 stars review

So far so good!

First week down. Mattress is very supportive.

Review from Serta
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Nov 8, 2025
Reviewer name: Charlene S
5 out of 5 stars
5 out of 5 stars review

Bush & Gilles - Single XL

Seems to be a great mattress

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Nov 17, 2025
Reviewer name: Yasmeen S
5 out of 5 stars
5 out of 5 stars review

New and nice!

Comfy so far. Lets see how it lasts!

Review from Serta
Helpful?1L02F9H4SZMK15213800559