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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
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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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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Mar 22, 2025
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
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Feb 1, 2025
Patricia Z
5 out of 5 stars
5 out of 5 stars review

Comfy, supportive, great quality

Our new Serta mattress and box springs are very comfortable and supportive (for my bad back). This mattress is very well made.

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

SATISFIED

Perfect Sleeper. We're able to sleep at night. Very satisfied with with our back problems. Problem satisfied, very firm comfortable.❤️👌

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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Jun 4, 2025
Benjamin M
5 out of 5 stars
5 out of 5 stars review

Perfect mattress

Comfortable, firm but not overly firm, and just right!

Review from Serta
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Jan 6, 2025
Aida V
5 out of 5 stars
5 out of 5 stars review

Comfy

I hope se will sleep well.

Review from Serta
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Jun 13, 2025
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
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Dec 30, 2024
Brian V
5 out of 5 stars
5 out of 5 stars review

Perfect firm and quality

Mattress exceeded expectations, firm and great construction.

Review from Serta
Helpful?1L02F9H4SZMK15213800559