Skip to Main Content
Sam's Club
Sam's Club
Customer reviews for Serta Perfect Sleeper X Knox Hybrid Mattress for
Serta Perfect Sleeper X Knox Hybrid Mattress
4.7 out of 5 stars
stars237 ratings237 reviews
  1. 5 stars79% (188)
  2. 4 stars16% (37)
  3. 3 stars3% (7)
  4. 2 stars0% (1)
  5. 1 star2% (4)

Member photos

  • +1 image
Sort by |
Showing 141-150 of 237 reviews
Jul 6, 2025
Deborah T
5 out of 5 stars review

Serra Mattress

Perfect depth and comfortable

Review from Serta
Helpful?7JIQY3DE2VJ715241662248
Oct 13, 2025
Bertha S
5 out of 5 stars review

Serta

I like a firm mattress and this fits my needs

Review from Serta
Helpful?7JIQY3DE2VJ715241662248
Dec 13, 2025
Fernando F
5 out of 5 stars review

Exelent for my back

good Support for my back

Review from Serta
Helpful?7JIQY3DE2VJ715241662248
Feb 3, 2026
James L
5 out of 5 stars review

Serta Firm

Very supportive

Review from Serta
Helpful?7JIQY3DE2VJ715241662248
Oct 25, 2025
Gary E
5 out of 5 stars review

Comfy

No more back aches

Review from Serta
Helpful?7JIQY3DE2VJ715241662248
Sep 12, 2024
leaht59
5 out of 5 stars review

Comfortable, supportive mattress.

[This review was collected as part of a promotion.] This hybrid mattress is perfect for our guest room. It is comfortable, durable, and breathable. It is a firm mattress, but it doesn't feel too hard, and the support it provides is great.

Review from influenster.com
Helpful?7JIQY3DE2VJ715241662248
Jan 28, 2025
redqueen193_9060
5 out of 5 stars review

Comfy Cozy

[This review was collected as part of a promotion.] This is a great mattress. It's tall, so if you have a tall frame you might want to get a new one. I love it. It's comfortable. I do think it could use a little more support but I love it.

Review from influenster.com
Helpful?7JIQY3DE2VJ715241662248
Feb 21, 2025
Susan D
5 out of 5 stars review

Sleep heaven

This mattress is so comfortable! It's firm but not too firm. I added my own pillow top and it feels like sleeping on a cloud. I'm a back sleeper and feel like this mattress has improved my sleep quality.

Review from Serta
Helpful?7JIQY3DE2VJ715241662248
Nov 3, 2024
Connie D
5 out of 5 stars review

Finally; no pain

Was having severe back; hip and shoulder pain. Slept on another bed on vacation and realized I needed to get a new mattress!! It’s amazing how much better I feel!!

Review from Serta
Helpful?7JIQY3DE2VJ715241662248
Jun 15, 2025
Adam C
4 out of 5 stars review

Great mattress

This mattress starts out firm at first but after a few nights sleep is very comfortable. I normally sleep on my back and it’s very supportive of them mid to low back and cradled your body!

Review from Serta
Helpful?7JIQY3DE2VJ715241662248