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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 61-70 of 264 reviews
May 21, 2026
Reviewer name: Kari C
5 out of 5 stars
5 out of 5 stars review

Comfy

Mattress is comfy and supportive. If you like a firm mattress - this is the one for you.

Review from Serta
Helpful?5QG9W3640AJR15213850222
Apr 16, 2026
Reviewer name: Joseph B
5 out of 5 stars
5 out of 5 stars review

First Night Restful

I typically take days to adjust to a new mattress. The first night was very relaxing.

Review from Serta
Helpful?5QG9W3640AJR15213850222
Apr 14, 2026
Reviewer name: Bill H
5 out of 5 stars
5 out of 5 stars review

Knox firm

A few days in. So far so good. Needed firm mattress. Waking up without pain

Review from Serta
Helpful?5QG9W3640AJR15213850222
Aug 28, 2026
Reviewer name: Bryan D
4 out of 5 stars
4 out of 5 stars review

Comfortable mattress

Very comfortable!

Review from Serta
Helpful?5QG9W3640AJR15213850222
Nov 23, 2024
Reviewer name: Holli
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great mattress

This mattress is amazing and a life saver. I did expect it to be more plush but it's still very comfortable. I sleep great now!

Review from Serta
Helpful?5QG9W3640AJR15213850222
Apr 19, 2025
Reviewer name: CA2025
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

GREAT MATRESS !!

Perfect firmness for both my wife and my needs. Slept like I didn't have kids waking me up every few hours again.

Review from Serta
Helpful?5QG9W3640AJR15213850222
Nov 19, 2024
Reviewer name: Seventies young
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

We bought this matress about a month ago and have loved it. We are older and it has been very comfortable.

Review from Serta
Helpful?5QG9W3640AJR15213850222
Nov 23, 2025
Reviewer name: Francis M
5 out of 5 stars
5 out of 5 stars review

Good Mattress

My new Serta mattress is great! I’am sleeping much better now that I have my new mattress! I recommend Serta mattresses.

Review from Serta
Helpful?5QG9W3640AJR15213850222
Nov 3, 2024
Reviewer name: mikeinaples
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Bouncy firm;)

I traded a firm which was very soft- I’d guess medium at most, but the extra firm is perfect for those who prefer a firm bed.

Review from Serta
Helpful?5QG9W3640AJR15213850222
Apr 7, 2025
Reviewer name: Dan24
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Very comfortable.

I’m very happy with my new mattress. I’ve been using it for a few weeks now, and my body feels more rusted and less pain when waking up.

Review from Serta
Helpful?5QG9W3640AJR15213850222