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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
stars232 ratings232 reviews
  1. 5 stars79% (184)
  2. 4 stars16% (36)
  3. 3 stars3% (7)
  4. 2 stars0% (1)
  5. 1 star2% (4)

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Showing 21-30 of 232 reviews
Jun 26, 2025
Eric T
5 out of 5 stars review

Great mattress - beautiful, well designed, and very comfortable

Love this mattress. Beautiful design and very comfortable. It has good support and a lovely cushioned top. Independent coil design with five comfort points is ingenious. We looked at every other brand, and this mattress was by far the best-designed and most competitively priced one we could find. Highly recommended.

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..

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Apr 27, 2026
Arturo R
5 out of 5 stars review

comfortable

excellent mattress very comfortable firm and soft

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May 19, 2026
Anne R
5 out of 5 stars review

New Comfy Mattress

Love it! It is so comforting and relaxing…with lots of support!

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May 3, 2026
Karen R
4 out of 5 stars review

New Mattress After 14 Years

Comfortable and Affordable

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Feb 1, 2025
Emankcin
5 out of 5 stars review

Verified Purchase

Very comfortable mattress for me. Firm but not too firm. No more back ache.

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May 14, 2026
Subhashkumar P
4 out of 5 stars review

Really great I enjoyed it

Great of restful sleep. Nice o can sleep on relax

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May 21, 2026
Kari C
5 out of 5 stars review

Comfy

Mattress is comfy and supportive. If you like a firm mattress - this is the one for you.

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Apr 2, 2025
Mel V
3 out of 5 stars review

Verified Purchase

Firm

Don't have any issues with the bed or service. Customers should know this bed is very firm.

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Feb 25, 2026
Allan C
5 out of 5 stars review

Great support and comfort for us side sleepers

So far our decision to replace our old Serta Icomfort Applause II was a good one. Very supportive, and provides a better night’s sleep.

Review from Serta
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