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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 121-130 of 249 reviews
Sep 12, 2025
Angel B
5 out of 5 stars
5 out of 5 stars review

Better than any mattress!

Bed is firm comfy…just the way we like it!

Review from Serta
Helpful?1L02F9H4SZMK15241662250
Aug 31, 2025
Sharron A
5 out of 5 stars
5 out of 5 stars review

Good quality

Nice mattress good support

Review from Serta
Helpful?1L02F9H4SZMK15241662250
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?1L02F9H4SZMK15241662250
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?1L02F9H4SZMK15241662250
Sep 18, 2025
Betsy C
3 out of 5 stars
3 out of 5 stars review

Firm but comfy

It’s a really nice mattress we just have to get use to the firmness!

Review from Serta
Helpful?1L02F9H4SZMK15241662250
Dec 5, 2025
Susan A
5 out of 5 stars
5 out of 5 stars review

Truly the Perfect Sleeper!

Perfect amount of firmness and comfort; definitely helped with healing my total hip replacement.

Review from Serta
Helpful?1L02F9H4SZMK15241662250
Nov 27, 2025
Tammy P
5 out of 5 stars
5 out of 5 stars review

Comfy

Just the right support, very comfortable

Review from Serta
Helpful?1L02F9H4SZMK15241662250
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?1L02F9H4SZMK15241662250
Feb 1, 2025
Emankcin
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Very comfortable mattress for me. Firm but not too firm. No more back ache.

Review from Serta
Helpful?1L02F9H4SZMK15241662250
Nov 2, 2025
Linda S
5 out of 5 stars
5 out of 5 stars review

Great

Thanks for the quality product and 10 year quality assurances.

Review from Serta
Helpful?1L02F9H4SZMK15241662250