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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
stars229 ratings229 reviews
  1. 5 stars79% (181)
  2. 4 stars16% (36)
  3. 3 stars3% (7)
  4. 2 stars0% (1)
  5. 1 star2% (4)

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Showing 41-50 of 229 reviews
Nov 23, 2025
Francis M
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
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Sep 19, 2025
Debbe H
5 out of 5 stars review

Saved my back

I have a lot of health issues with my back and haven’t been able to find a mattress that is comfortable until now. Thank you so much.

Review from Serta
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Aug 14, 2025
Linda S
5 out of 5 stars review

So far so good

Having slept on our new Serta Perfect Sleeper X Hybrid Knox Plush Cal King for two nights has been wonderful. Supportive and comfortable for much needed good night sleep.

Review from Serta
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Aug 28, 2025
BETHS
5 out of 5 stars review

Perfect blend of support and comfort.

I’m a side sleeper and was looking for a firm mattress that would not make the pressure points in my shoulder and hips hurt. This hybrid mattress has been perfect for me!

Review from ashleyfurniture
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Jul 11, 2025
Carol L
5 out of 5 stars review

Love it

Once I lay down to sleep, I fall to sleep immediately and sleep the entire night. It is very comfortable and no aches or pains. I am totally happy and satisfied with it

Review from Serta
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Jul 4, 2025
Cheryl M
5 out of 5 stars review

Best Sleep I’ve Ever Had

Very firm but comfortably supports my spine after two surgeries. I go right to sleep without tossing and turning like I did with my previous mattress.

Review from Serta
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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
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Jan 30, 2026
Teresa B
4 out of 5 stars review

Relaxing

Comfortable and supportive.

Review from Serta
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Feb 7, 2026
James R
4 out of 5 stars review

Firm

Looking forward to sleeping on a flat surface.

Review from Serta
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Jan 24, 2026
Riley C
5 out of 5 stars review

Perfect Balance

Perfect balance of plush with firm that fits both of us!

Review from Serta
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