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Sam's Club
Sam's Club
Customer reviews for Serta Perfect Sleeper X Knox Hybrid Mattress for
Serta Perfect Sleeper X Knox Hybrid Mattress
4.7 out of 5 stars
stars235 ratings235 reviews
  1. 5 stars80% (187)
  2. 4 stars15% (36)
  3. 3 stars3% (7)
  4. 2 stars0% (1)
  5. 1 star2% (4)

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Showing 171-180 of 235 reviews
May 28, 2025
Mary T
5 out of 5 stars review

Excellent mattress

I love the Serta Knox firm mattress! Even though it is firm, it is comfortable and I can sleep without any issues.

Review from Serta
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Apr 19, 2025
Jeremy H
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
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Mar 27, 2025
Sarah U
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
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Mar 9, 2025
Patricia N
5 out of 5 stars review

SATISFIED

Perfect Sleeper. We're able to sleep at night. Very satisfied with with our back problems. Problem satisfied, very firm comfortable.❤️👌

Review from Serta
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Mar 22, 2025
Keith L
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
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Apr 29, 2025
Deborah C
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
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Dec 14, 2024
Scott M
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
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Feb 24, 2025
Deborah S
5 out of 5 stars review

Serta King Knox

Enjoying this new mattress!

Review from Serta
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Jun 4, 2025
Benjamin M
5 out of 5 stars review

Perfect mattress

Comfortable, firm but not overly firm, and just right!

Review from Serta
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Jan 16, 2025
Hyacinth M
5 out of 5 stars review

New dreams

Very supportive thick mattress.

Review from Serta
Helpful?7JIQY3DE2VJ715231903459