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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
250 ratings250 reviews
  1. 5 stars79% (198)
  2. 4 stars15% (38)
  3. 3 stars3% (7)
  4. 2 stars1% (2)
  5. 1 star2% (5)

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Showing 101-110 of 250 reviews
Sep 27, 2024
Reviewer name: rebandwrath
5 out of 5 stars
5 out of 5 stars review

Perfect

[This review was collected as part of a promotion.] The most comfortable bed I have ever slept on in my life. It’s cooling too so it’s perfect for the summer when it’s too hot to sleep. Breathes easy and supports my body weight and heavy dogs with me.

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Sep 25, 2024
Reviewer name: aur0raxxborealis_8663
5 out of 5 stars
5 out of 5 stars review

Firm and hefty!

[This review was collected as part of a promotion.] The Perfect SIeeper Quilted Hybrid was aesthetically, a very clean beautiful mattress with quite a bit of thickness and heft, which made setting it up a bit challenging without assistance. The weight does add to the sense of durability and sturdiness. I was pleasantly surprised to find no odor, which is often an issue with newer mattresses. Most notably though, the mattress is quite firm, which is the style I selected. It's exactly as advertised, very firm. There is little cushion or give but provides great support. I would not recommend this mattress if someone wants to "sleep on a cloud" but rather, would be ideal for those needing extra back support. For anyone looking for a firm mattress that feels built to last, this one would be a great choice.

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Sep 23, 2024
Reviewer name: sarahhhwhite_
5 out of 5 stars
5 out of 5 stars review

Best Night’s Sleep

[This review was collected as part of a promotion.] I was so excited to receive this mattress! This is the most comfortable bed that I have slept on. Everything from the cooling technology to the perfect balance of firmness to plush. I’ve never had any discomfort from sleeping and I am a side sleeper. I would recommend this mattress to anyone in the market for something new that has great cooling technology and molds perfectly to make a great nights sleep!

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Oct 22, 2024
Reviewer name: photoginthewild
5 out of 5 stars
5 out of 5 stars review

Sleep Cool and Comfortable

[This review was collected as part of a promotion.] I have spent a full month sleeping on this mattress. I love it! I am a bit of a princess and a pea when it comes to mattresses. Most importantly for me, I am a woman who wakes up hot in the middle of the night. Not sweaty but just hot, not in a snuggly way but an uncomfortable way. I have not had that issue at all with this mattress. It conforms and cradles your curves if you are a side sleeper and it is a very tall mattress which I like. For reference, my previous mattress was a tempurpedic so I was worried about it being too soft but while the top is thick and plus, it has plenty of support. Very pleased with this mattress!

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Sep 3, 2024
Reviewer name: elenag92
5 out of 5 stars
5 out of 5 stars review

It offers everything I need

[This review was collected as part of a promotion.] This mattress strikes the perfect balance between firmness and softness. The hybrid design combines the support of coils with the plush comfort of memory foam. It’s firm enough to provide excellent support for my back, which is crucial after long days of household chores, yet soft enough to feel like I’m sinking into a cloud every night. One of my biggest concerns with mattresses has always been overheating during the night, but the Perfect Sleeper has really impressed me. The quilted top layer seems to do a great job of regulating temperature, keeping me cool. The build quality of this mattress is outstanding. It feels sturdy and well-made, and after several weeks of use, there’s no sign of sagging or wear. I believe this mattress will last for many years, which is a relief because I definitely don’t want to go through the hassle of mattress shopping again anytime soon! One unexpected bonus is the excellent edge support. I can sit on the edge of the bed without feeling like I’m going to slide off, which is great for those moments when I need to slip out of bed quietly without waking anyone else. Overall, it has been a wonderful addition to our home. It offers everything I need in a mattress: comfort, support, durability, and a cool sleeping experience

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Oct 13, 2024
Reviewer name: abhilashp
5 out of 5 stars
5 out of 5 stars review

Perfect Hybrid Mattress

[This review was collected as part of a promotion.] This Serta mattress has a beautiful design pattern. It provides proper support no matter if I sleep on my back or on sides. The mattress actually has firmness that I was expecting, other mattresses I’ve used in the past deforms memory foam overtime with weight. Hybrid technology indeed brings best of spring and memory foam mattress together.

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Sep 30, 2025
Reviewer name: Vincent W
4 out of 5 stars
4 out of 5 stars review

So far so good!

First week down. Mattress is very supportive.

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Aug 31, 2025
Reviewer name: Sharron A
5 out of 5 stars
5 out of 5 stars review

Good quality

Nice mattress good support

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Dec 12, 2025
Reviewer name: Debbie H
5 out of 5 stars
5 out of 5 stars review

Comfy!

Nice and firm, very comfortable and I do not want to get out of bed!!

Review from Serta
Helpful?1L02F9H4SZMK15235570026
Dec 5, 2025
Reviewer name: Geraldine T
5 out of 5 stars
5 out of 5 stars review

Hybrid Serra mattress

Great for relief of my back pain so far

Review from Serta
Helpful?1L02F9H4SZMK15235570026