Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
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)

Member photos

Sort by |
Showing 71-80 of 249 reviews
Oct 13, 2025
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?1L02F9H4SZMK15183522499
Nov 19, 2024
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?1L02F9H4SZMK15183522499
Nov 23, 2024
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?1L02F9H4SZMK15183522499
Dec 13, 2025
Linda S
1 out of 5 stars
1 out of 5 stars review

Sink hole

When I first got this replacement, it was great, and now, for the last four months I’ve been dealing with a sink hole and is killing my lower back.

Review from Serta
Helpful?1L02F9H4SZMK15183522499
Apr 7, 2025
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?1L02F9H4SZMK15183522499
May 8, 2026
Olsi G
5 out of 5 stars
5 out of 5 stars review

Nice

Nice mattress

Review from Serta
Helpful?1L02F9H4SZMK15183522499
Nov 21, 2024
kaifou_199126
5 out of 5 stars
5 out of 5 stars review

Have you ever wanted your bed to give you a hug?

[This review was collected as part of a promotion.] This bed was put into our guest room and it might be more comfortable than my bed. With the right mattress protector, the mattress is surprisingly cooling and cozy in both hot and cold weather! The mattress has the perfect balance of plushness and support for your body. I would recommend to anyone looking for a new mattress.

Review from Serta
Helpful?1L02F9H4SZMK15183522499
Sep 15, 2024
ad116
5 out of 5 stars
5 out of 5 stars review

Great night sleep on this firm, pleasant cooling effect, high quality material and beautiful design pattern

[This review was collected as part of a promotion.] Great mattress! I was very excited to finally get a new mattress and I had such a great night of sleep after sleeping on this Serta one. My previous mattress was softer, and I had been waking up with some back pain, but this mattress is firm and helps a lot with my back and hips not sinking in as I sleep. It has a pleasant cooling effect so I didn’t feel overheated at night, and I love that it’s thicker as I like to sleep higher up off the ground since I am tall. It was such a shame to have to cover up the mattress with my bedding as I loved the design and dark blue and white color patterns. It also has helpful handles on the side so you can adjust it as needed on your bedframe. It’s on the heavier side, but most of my mattresses in the past have been heavy as well so I didn’t mind that. I prefer a heavier mattress, so it feels more sturdy when I am on the bed. I would definitely recommend this to anyone looking for a firmer high quality mattress!  

Review from Serta
Helpful?1L02F9H4SZMK15183522499
May 20, 2025
Susan T
5 out of 5 stars
5 out of 5 stars review

The best sleep in years

I had my other mattress for 15 years, and it was great until the last week. I knew I had to replace it. I went to Mattress Peddler as I had been there when friends mattress shopping and was impressed with the professionalism and kindness of the owner. I love the mattress I purchased. Just the right firmness. I am so happy

Review from Serta
Helpful?1L02F9H4SZMK15183522499
Feb 12, 2025
Guillermo Z
5 out of 5 stars
5 out of 5 stars review

Best Sleep Ever

We got a new mattress and after much deliberation, went with a Serta. We have no more back or hip pain when we wake up in the morning, it has great support, and I haven’t slept this great in years. Another thing that impressed me was the attention to aesthetics; the embroidered flowers on the mattress top are lovely. Thank you Serta!

Review from Serta
Helpful?1L02F9H4SZMK15183522499