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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
249 ratings249 reviews
  1. 5 stars79% (197)
  2. 4 stars15% (38)
  3. 3 stars3% (7)
  4. 2 stars1% (2)
  5. 1 star2% (5)

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Showing 131-140 of 249 reviews
Nov 30, 2025
Rick Y
5 out of 5 stars
5 out of 5 stars review

Feels great

Very comfortable and woke pain free. Great product

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Sep 21, 2025
Katherine H
5 out of 5 stars
5 out of 5 stars review

Excellent

Supportive yet still feel I can sleep on my side comfortably!

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Oct 3, 2025
Alin K
4 out of 5 stars
4 out of 5 stars review

So far so good!

I've only slept on my new mattress five nights and I really like it already.

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Nov 17, 2025
Yasmeen S
5 out of 5 stars
5 out of 5 stars review

New and nice!

Comfy so far. Lets see how it lasts!

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Dec 5, 2025
Mayra V
5 out of 5 stars
5 out of 5 stars review

The best for best price.

Great strong and soft mattress for rest and sleepful.

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Oct 15, 2025
Teresa H
3 out of 5 stars
3 out of 5 stars review

Disappointing

Already showing body imprints. Not really "cool" sleeping. It's just ok.

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Feb 3, 2026
James L
5 out of 5 stars
5 out of 5 stars review

Serta Firm

Very supportive

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Mar 28, 2026
Sarah A
5 out of 5 stars
5 out of 5 stars review

Ashley Furniture

Great firm mattress

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Mar 16, 2026
Lisa A
4 out of 5 stars
4 out of 5 stars review

Firm

Firm and supportive

Review from Serta
Helpful?1L02F9H4SZMK15251060596
Apr 6, 2026
Marta Z
5 out of 5 stars
5 out of 5 stars review

Full size Mattress

Just unwrapped it.

Review from Serta
Helpful?1L02F9H4SZMK15251060596