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Customer reviews for Serta Perfect Sleeper X Knox Hybrid Mattress for
Serta Perfect Sleeper X Knox Hybrid Mattress
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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 141-150 of 229 reviews
Aug 8, 2025
Deborah F
5 out of 5 stars review

Serta Knox Firm Mattress

This mattress is very firm & comfortable mattress.

Review from Serta
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Aug 31, 2025
Sharron A
5 out of 5 stars review

Good quality

Nice mattress good support

Review from Serta
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Jun 25, 2025
Laurie david K
4 out of 5 stars review

Very firm and love the zero G

Very firm and love the zero G

Review from Serta
Helpful?7JIQY3DE2VJ715258605555
Dec 13, 2025
Fernando F
5 out of 5 stars review

Exelent for my back

good Support for my back

Review from Serta
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Sep 22, 2025
Cindy D
5 out of 5 stars review

Sleep like a baby

So firm! I love it!

Review from Serta
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Sep 18, 2025
Arthur T
4 out of 5 stars review

New Mattress

So star, so good!

Review from Serta
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Sep 18, 2025
Maha A
5 out of 5 stars review

Great quality

Comfy and nice matters

Review from Serta
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Sep 18, 2025
Nina T
4 out of 5 stars review

New Mattress

So far it’s comfy

Review from Serta
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Oct 25, 2025
Gary E
5 out of 5 stars review

Comfy

No more back aches

Review from Serta
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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?7JIQY3DE2VJ715258605555