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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 51-60 of 249 reviews
Apr 24, 2026
Elona C
5 out of 5 stars
5 out of 5 stars review

My new bed

My mattress is comfortable and allows a good night rest.

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Aug 2, 2026
Benjamin K
5 out of 5 stars
5 out of 5 stars review

comfy

very comfortable

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Jul 25, 2026
Joseph T
4 out of 5 stars
4 out of 5 stars review

Very comfortable mattress

Nice supportive mattress

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Feb 4, 2026
Christian Q
5 out of 5 stars
5 out of 5 stars review

Great Product

Comfy and exactly what we were looking for!

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Jan 23, 2026
Paul W
5 out of 5 stars
5 out of 5 stars review

Adjustable bed

It feels so good to wake up refreshed!

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Jan 25, 2026
Linda S
5 out of 5 stars
5 out of 5 stars review

Perfect Sleeper

So so good! Very comfy and cozy and great for my back!

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Jan 24, 2026
Riley C
5 out of 5 stars
5 out of 5 stars review

Perfect Balance

Perfect balance of plush with firm that fits both of us!

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Mar 27, 2026
Trent W
5 out of 5 stars
5 out of 5 stars review

Nice mattress

Firm but not extra firm with some top foam. It's nice!

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Feb 7, 2026
James R
4 out of 5 stars
4 out of 5 stars review

Firm

Looking forward to sleeping on a flat surface.

Review from Serta
Helpful?1L02F9H4SZMK15258655886
Feb 20, 2026
Elaine M
5 out of 5 stars
5 out of 5 stars review

Comfortable nights rest

Supportive & just the right amount of softness

Review from Serta
Helpful?1L02F9H4SZMK15258655886