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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
264 ratings264 reviews
  1. 5 stars79% (208)
  2. 4 stars15% (40)
  3. 3 stars3% (9)
  4. 2 stars1% (2)
  5. 1 star2% (5)
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Showing 101-110 of 264 reviews
Sep 12, 2024
Reviewer name: jordanjd
5 out of 5 stars
5 out of 5 stars review

Better sleep and comforting! Great for my back.

[This review was collected as part of a promotion.] This mattress has been a huge help to the quality of sleep that my wife & I get. Before we had a firm memory foam mattress & it was causing some morning discomfort for both of us. After receiving this mattress it took a week or so to break it in but we have both been sleeping so much better & having little to no discomfort in the mornings. I will say it’s a bit too stiff to sleep on your side with but other than that it’s a great mattress overall. Great material & quality which makes me hopeful it’ll last many years.

Review from Serta
Helpful?5QG9W3640AJR15258655880
Sep 21, 2024
Reviewer name: dennyl1
5 out of 5 stars
5 out of 5 stars review

Cooling technology

[This review was collected as part of a promotion.] After a month of sleeping on the **Serta Perfect Sleeper Quilted Hybrid 24 Knox Plush Tight Top (Queen)**, here are some impressions I have: ### Comfort and Support: - **Plush Feel with Firm Support**: The plush top provides a soft, welcoming surface, while the underlying firm support ensures proper spinal alignment. This combination is ideal for back and stomach sleepers who need solid support but still enjoy a softer surface for comfort - **Pressure Relief**: The memory foam and gel layers do a good job of relieving pressure from key areas such as the shoulders, hips, and lower back, which is particularly helpful if you're prone to waking up with aches ### Cooling Features: - **Cooling Tech**: One of the standout features is the **Cool Twist Gel Foam** and **graphite-infused memory foam**. These layers work well to dissipate body heat, keeping the mattress relatively cool even on warm nights. If you're a hot sleeper, you may notice an improvement in temperature regulation ### Motion Isolation: - **Minimized Partner Disturbance**: The mattress's coil and foam construction does a great job of isolating motion, so if you share your bed with someone, you’re less likely to be disturbed by their movements during the night ### Adjustability and Durability: - **Early Durability Observations**: After a month, the mattress should still feel as firm and supportive as when it was first purchased. The **edge support** is strong, preventing sagging when sitting or lying near the edges. Additionally, it’s compatible with adjustable bases, which adds flexibility for various sleeping positions ### Potential Downsides: - **Plush Might Be Too Soft for Some**: Although the plush top feels luxurious, some users might find it a bit too soft, especially if they prefer firmer surfaces or are heavier individuals, as they might experience more sinkage than they prefer Overall, after a month, this mattress should still feel new, with excellent support and comfort, making it a solid choice for those who value pressure relief, motion isolation, and cooling technology.

Review from Serta
Helpful?5QG9W3640AJR15258655880
Sep 16, 2024
Reviewer name: bradh19
5 out of 5 stars
5 out of 5 stars review

Great support and breathability

[This review was collected as part of a promotion.] This is an absolutely comfortable bed. Didn't know how our old bed was wore out until we felt the support this bed provides. We seem to sleep cool and it breathes well. Great packaging and should last a long time.

Review from Serta
Helpful?5QG9W3640AJR15258655880
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?5QG9W3640AJR15258655880
Mar 9, 2025
Reviewer name: Michelle S
5 out of 5 stars
5 out of 5 stars review

Fantastic support!

This mattress is so comfortable! Perfect amount of softness on the top to support my curves with great firm support beneath. I am just giddy to climb into bed each night. I don't know why I didn't buy a new mattress sooner. I had no idea what I was missing!

Review from Serta
Helpful?5QG9W3640AJR15258655880
Apr 2, 2025
Reviewer name: 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?5QG9W3640AJR15258655880
Jan 25, 2026
Reviewer name: Linda S
5 out of 5 stars
5 out of 5 stars review

Perfect Sleeper

So so good! Very comfy and cozy and great for my back!

Review from Serta
Helpful?5QG9W3640AJR15258655880
Nov 30, 2025
Reviewer name: Rick Y
5 out of 5 stars
5 out of 5 stars review

Feels great

Very comfortable and woke pain free. Great product

Review from Serta
Helpful?5QG9W3640AJR15258655880
Nov 2, 2025
Reviewer name: 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?5QG9W3640AJR15258655880
Feb 1, 2025
Reviewer name: 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?5QG9W3640AJR15258655880