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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 151-160 of 264 reviews
Feb 3, 2026
Reviewer name: James L
5 out of 5 stars
5 out of 5 stars review

Serta Firm

Very supportive

Review from Serta
Helpful?5QG9W3640AJR15240352414
Dec 13, 2025
Reviewer name: Fernando F
5 out of 5 stars
5 out of 5 stars review

Exelent for my back

good Support for my back

Review from Serta
Helpful?5QG9W3640AJR15240352414
Oct 25, 2025
Reviewer name: Gary E
5 out of 5 stars
5 out of 5 stars review

Comfy

No more back aches

Review from Serta
Helpful?5QG9W3640AJR15240352414
Aug 11, 2025
Reviewer name: Patricia B
3 out of 5 stars
3 out of 5 stars review

So so

Seems to stay indented where I sleep. Didn’t think I would have that with such an expensive mattress. But seems to be comfortable.

Review from Serta
Helpful?5QG9W3640AJR15240352414
Dec 14, 2024
Reviewer name: Scott M
5 out of 5 stars
5 out of 5 stars review

So far so good

Have had one night only so far and we are very pleased. Slept very well! Just the right level of firmness for us.

Review from Serta
Helpful?5QG9W3640AJR15240352414
Apr 29, 2025
Reviewer name: Deborah C
5 out of 5 stars
5 out of 5 stars review

Firm and comfortable

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

Review from Serta
Helpful?5QG9W3640AJR15240352414
Nov 3, 2024
Reviewer name: Sonja G
5 out of 5 stars
5 out of 5 stars review

grnlight

This mattress is firm and supportive exact comfort for me with a touch of softness like a pillow top. I just love it.

Review from Serta
Helpful?5QG9W3640AJR15240352414
Jul 17, 2025
Reviewer name: Kendra S
4 out of 5 stars
4 out of 5 stars review

Sister bed

My sister seems to be comfortable and sleeps well through the night. No more saggy mattress she wakes up with a smile on her face.

Review from Serta
Helpful?5QG9W3640AJR15240352414
Feb 1, 2025
Reviewer name: Patricia Z
5 out of 5 stars
5 out of 5 stars review

Comfy, supportive, great quality

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

Review from Serta
Helpful?5QG9W3640AJR15240352414
Sep 19, 2025
Reviewer name: Debbe H
5 out of 5 stars
5 out of 5 stars review

Saved my back

I have a lot of health issues with my back and haven’t been able to find a mattress that is comfortable until now. Thank you so much.

Review from Serta
Helpful?5QG9W3640AJR15240352414