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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 161-170 of 264 reviews
Mar 27, 2025
Reviewer name: Sarah U
1 out of 5 stars
1 out of 5 stars review

Impressions permanent in less than two weeks

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

Review from Serta
Helpful?5QG9W3640AJR15235568831
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?5QG9W3640AJR15235568831
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?5QG9W3640AJR15235568831
Apr 19, 2025
Reviewer name: Jeremy H
5 out of 5 stars
5 out of 5 stars review

"It's good, I like it!"

These are the words of the wisest, smartest, and most beautiful person in the world: My Wife. Passes the wife test, passes my test.

Review from Serta
Helpful?5QG9W3640AJR15235568831
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?5QG9W3640AJR15235568831
Mar 22, 2025
Reviewer name: Keith L
5 out of 5 stars
5 out of 5 stars review

Perfect!

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

Review from Serta
Helpful?5QG9W3640AJR15235568831
Oct 13, 2025
Reviewer name: Barbara E
3 out of 5 stars
3 out of 5 stars review

Adjustable bed

I like the bed but unhappy that I cannot use my head board and it is difficult to keep the top sheet secured.

Review from Serta
Helpful?5QG9W3640AJR15235568831
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?5QG9W3640AJR15235568831
Jul 2, 2025
Reviewer name: Shoi G
4 out of 5 stars
4 out of 5 stars review

Super firm

I wanted a firm mattress and I found the perfect one.

Review from Serta
Helpful?5QG9W3640AJR15235568831
Sep 29, 2025
Reviewer name: Normand G
5 out of 5 stars
5 out of 5 stars review

Comfort!!

Very comfortable mattress!

Review from Serta
Helpful?5QG9W3640AJR15235568831