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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 111-120 of 249 reviews
Dec 8, 2025
Kendra B
4 out of 5 stars
4 out of 5 stars review

Getting to know each other

First few nights was a little stiff. But now settling in and super comfortable.

Review from Serta
Helpful?1L02F9H4SZMK15202901145
Oct 3, 2025
Alin K
4 out of 5 stars
4 out of 5 stars review

So far so good!

I've only slept on my new mattress five nights and I really like it already.

Review from Serta
Helpful?1L02F9H4SZMK15202901145
Nov 29, 2025
William H
5 out of 5 stars
5 out of 5 stars review

Noce bed

Bought it with an adjustable base. Seems comfortable

Review from Serta
Helpful?1L02F9H4SZMK15202901145
Sep 20, 2025
Pam C
5 out of 5 stars
5 out of 5 stars review

Extremely comfortable

This mattress is so comfortable. It gives to your body but also supportive.

Review from Serta
Helpful?1L02F9H4SZMK15202901145
Oct 13, 2025
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?1L02F9H4SZMK15202901145
Apr 2, 2025
Mel V
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Firm

Don't have any issues with the bed or service. Customers should know this bed is very firm.

Review from Serta
Helpful?1L02F9H4SZMK15202901145
Sep 28, 2025
Stephen m M
5 out of 5 stars
5 out of 5 stars review

Great mattress

Comfortable and supportive!

Review from Serta
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Sep 18, 2025
Sheila G
5 out of 5 stars
5 out of 5 stars review

Serta

Mattress is very pretty in color and comfortable. I hope it will last at least 10 years.

Review from Serta
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Dec 5, 2025
Geraldine T
5 out of 5 stars
5 out of 5 stars review

Hybrid Serra mattress

Great for relief of my back pain so far

Review from Serta
Helpful?1L02F9H4SZMK15202901145
Nov 22, 2025
Ronda S
5 out of 5 stars
5 out of 5 stars review

Firm and comfortable

Love new mattress. Side sleeper and it is not too firm to cause discomfort. Highly recommend.

Review from Serta
Helpful?1L02F9H4SZMK15202901145