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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 31-40 of 235 reviews
Mar 21, 2026
Cari T
4 out of 5 stars review

Perfect Sleeper

This mattress will be “perfect” as soon as my back adjusts to the firmness. I do like the comfiness of the top layer and the mattress is supportive.

Review from Serta
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Apr 2, 2026
Jill M
5 out of 5 stars review

Best Mattress Ever!

Firm, but not too firm, felt supported and blissful from the very first night...best sleep I've had in months!

Review from Serta
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Apr 12, 2026
Marc G
4 out of 5 stars review

Comfortable

Comfy mattress, I don’t like the blue floral color fabric, only draw back.

Review from Serta
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Apr 14, 2026
Bill H
5 out of 5 stars review

Knox firm

A few days in. So far so good. Needed firm mattress. Waking up without pain

Review from Serta
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Apr 19, 2026
Robert F
4 out of 5 stars review

Not light

So far seems cool im older and had to have help to move it

Review from Serta
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Apr 16, 2026
Joseph B
5 out of 5 stars review

First Night Restful

I typically take days to adjust to a new mattress. The first night was very relaxing.

Review from Serta
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Apr 28, 2026
Shannon C
4 out of 5 stars review

New firmness

Firm & supportive where I need it and still comfortable enough to sleep on my side..

Review from Serta
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Apr 27, 2026
Arturo R
5 out of 5 stars review

comfortable

excellent mattress very comfortable firm and soft

Review from Serta
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Apr 24, 2026
Elona C
5 out of 5 stars review

My new bed

My mattress is comfortable and allows a good night rest.

Review from Serta
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Dec 13, 2025
Linda S
1 out of 5 stars review

Sink hole

When I first got this replacement, it was great, and now, for the last four months I’ve been dealing with a sink hole and is killing my lower back.

Review from Serta
Helpful?7JIQY3DE2VJ715231903459