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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 171-180 of 249 reviews
Jun 21, 2025
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?1L02F9H4SZMK15235568831
Dec 14, 2024
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
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Jul 17, 2025
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
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Apr 29, 2025
Deborah C
5 out of 5 stars
5 out of 5 stars review

Firm and comfortable

The mattress is very firm, which I at first was unhappy about. However now, after several months, I am very glad I chose it.

Review from Serta
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Aug 11, 2025
Patricia B
3 out of 5 stars
3 out of 5 stars review

So so

Seems to stay indented where I sleep. Didn’t think I would have that with such an expensive mattress. But seems to be comfortable.

Review from Serta
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Mar 27, 2025
Sarah U
1 out of 5 stars
1 out of 5 stars review

Impressions permanent in less than two weeks

The mattress already has divots or impressions from where we sleep in less than two weeks. We are not overweight.

Review from Serta
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Mar 9, 2025
Raymond b N
5 out of 5 stars
5 out of 5 stars review

Great mattress

Very supportive mattress. A restful night sleep.

Review from Serta
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May 9, 2025
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?1L02F9H4SZMK15235568831
May 5, 2025
Rodney cristina B
5 out of 5 stars
5 out of 5 stars review

PSX 24 Knox FM Queen

Best nights sleep in sooo long! Soft enoght o invite,firm enough to support.

Review from Serta
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Feb 22, 2025
Wayman T
3 out of 5 stars
3 out of 5 stars review

Doesn’t feel like it did in the store

Hoping it will soften soon

Review from Serta
Helpful?1L02F9H4SZMK15235568831