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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
stars237 ratings237 reviews
  1. 5 stars79% (188)
  2. 4 stars16% (37)
  3. 3 stars3% (7)
  4. 2 stars0% (1)
  5. 1 star2% (4)

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Showing 161-170 of 237 reviews
Sep 7, 2025
Wanda R
5 out of 5 stars review

Sleep deep

Great night's sleep!

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Sep 22, 2025
Cindy D
5 out of 5 stars review

Sleep like a baby

So firm! I love it!

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Jul 31, 2025
Cherrie K
4 out of 5 stars review

Serra for good rest

Comfy for back issues

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Sep 3, 2025
Phyllis W
5 out of 5 stars review

Excellent and importantly so comfortable

Firm and comfortable

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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.

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Feb 1, 2025
Patricia Z
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.

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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.

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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!

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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.

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Nov 3, 2024
Sonja G
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
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