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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
264 ratings264 reviews
  1. 5 stars79% (208)
  2. 4 stars15% (40)
  3. 3 stars3% (9)
  4. 2 stars1% (2)
  5. 1 star2% (5)
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Showing 161-170 of 264 reviews
Apr 19, 2025
Reviewer name: Jeremy H
5 out of 5 stars
5 out of 5 stars review

"It's good, I like it!"

These are the words of the wisest, smartest, and most beautiful person in the world: My Wife. Passes the wife test, passes my test.

Review from Serta
Helpful?5QG9W3640AJR15183522499
Jun 21, 2025
Reviewer name: Erica N
5 out of 5 stars
5 out of 5 stars review

Perfect Sleep

Not too firm, not too soft, just right! In love with my new mattress. Highly recommend. It makes a difference!

Review from Serta
Helpful?5QG9W3640AJR15183522499
May 28, 2025
Reviewer name: Mary T
5 out of 5 stars
5 out of 5 stars review

Excellent mattress

I love the Serta Knox firm mattress! Even though it is firm, it is comfortable and I can sleep without any issues.

Review from Serta
Helpful?5QG9W3640AJR15183522499
Mar 22, 2025
Reviewer name: Keith L
5 out of 5 stars
5 out of 5 stars review

Perfect!

I was looking for more support something not too hard and not too soft and I settled for the plush and it’s perfect!

Review from Serta
Helpful?5QG9W3640AJR15183522499
Jul 17, 2025
Reviewer name: Kendra S
4 out of 5 stars
4 out of 5 stars review

Sister bed

My sister seems to be comfortable and sleeps well through the night. No more saggy mattress she wakes up with a smile on her face.

Review from Serta
Helpful?5QG9W3640AJR15183522499
Dec 14, 2024
Reviewer name: Scott M
5 out of 5 stars
5 out of 5 stars review

So far so good

Have had one night only so far and we are very pleased. Slept very well! Just the right level of firmness for us.

Review from Serta
Helpful?5QG9W3640AJR15183522499
Oct 13, 2025
Reviewer name: Barbara E
3 out of 5 stars
3 out of 5 stars review

Adjustable bed

I like the bed but unhappy that I cannot use my head board and it is difficult to keep the top sheet secured.

Review from Serta
Helpful?5QG9W3640AJR15183522499
Nov 23, 2024
Reviewer name: Lynn P
5 out of 5 stars
5 out of 5 stars review

Mattress comfort

Excellent so far and comfy.

Review from Serta
Helpful?5QG9W3640AJR15183522499
Jun 13, 2025
Reviewer name: Analuci M
5 out of 5 stars
5 out of 5 stars review

Nice and firm mattress

Looks really solid and durable. My son will love it!

Review from Serta
Helpful?5QG9W3640AJR15183522499
May 9, 2025
Reviewer name: Takyi C
4 out of 5 stars
4 out of 5 stars review

Comfy and supportive mattress

Comfy and supportive mattress 👍

Review from Serta
Helpful?5QG9W3640AJR15183522499