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Customer reviews for Serta Perfect Sleeper X Knox Hybrid Mattress for
Serta Perfect Sleeper X Knox Hybrid Mattress
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4.7 out of 5 stars
stars
250 ratings250 reviews
  1. 5 stars79% (198)
  2. 4 stars15% (38)
  3. 3 stars3% (7)
  4. 2 stars1% (2)
  5. 1 star2% (5)

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Showing 131-140 of 250 reviews
Oct 13, 2025
Reviewer name: Bertha S
5 out of 5 stars
5 out of 5 stars review

Serta

I like a firm mattress and this fits my needs

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Sep 29, 2025
Reviewer name: Normand G
5 out of 5 stars
5 out of 5 stars review

Comfort!!

Very comfortable mattress!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Sep 18, 2025
Reviewer name: Betsy C
3 out of 5 stars
3 out of 5 stars review

Firm but comfy

It’s a really nice mattress we just have to get use to the firmness!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Sep 18, 2025
Reviewer name: John P
5 out of 5 stars
5 out of 5 stars review

John P like looks

Just got today, I’ll know better tomorrow.

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Sep 12, 2025
Reviewer name: Angel B
5 out of 5 stars
5 out of 5 stars review

Better than any mattress!

Bed is firm comfy…just the way we like it!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Oct 19, 2025
Reviewer name: Gary E
5 out of 5 stars
5 out of 5 stars review

Great!

Comfy & good night’s rest!

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Nov 27, 2025
Reviewer name: Tammy P
5 out of 5 stars
5 out of 5 stars review

Comfy

Just the right support, very comfortable

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Mar 28, 2026
Reviewer name: Sarah A
5 out of 5 stars
5 out of 5 stars review

Ashley Furniture

Great firm mattress

Review from Serta
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Apr 6, 2026
Reviewer name: Marta Z
5 out of 5 stars
5 out of 5 stars review

Full size Mattress

Just unwrapped it.

Review from Serta
Helpful?1L02F9H4SZMK15213800559
Feb 3, 2026
Reviewer name: James L
5 out of 5 stars
5 out of 5 stars review

Serta Firm

Very supportive

Review from Serta
Helpful?1L02F9H4SZMK15213800559