ActiveX Mattress Review Nest Bedding
A firmer, athlete-focused foam bed from Nest Bedding that trades a little softness for serious support — and manages to sleep surprisingly cool doing it.
Customers have reported that the ActiveX is almost as cool as the $3,000 spring mattress competitors.
Our reviewerSerious Support, Built to Sleep Cool
Nest Bedding built the ActiveX for athletes and exercise-focused sleepers, and its case rests on two claims: exceptional coolness and some of the best support around. We measured its firmness at 7 out of 10 — the dense top foam trades a bit of softness for fantastic pressure relief and full-body support aimed at helping active customers recover after a hard day.
Support follows the firmness: the high-density foam has us finding no reports of sleeper pain with this bed. Sinkage measured 2 inches at the center, and despite the dense build, the foam top keeps horizontal motion transfer to a minimum, so a partner moving around shouldn't disrupt the other sleeper.
Cooling was clearly a design priority. Dense foam beds tend to run hot, especially next to traditional spring mattresses, so Nest layered a Luma Cooling Foam top over a Gel Response Foam and a convoluted air-flow layer beneath. The result reportedly sleeps nearly as cool as $3,000 spring-mattress competitors, according to customer reports. A few customers did note mild off-gassing on unboxing, though that's typical for a box mattress and dissipates within a few hours.
The flashy, brightly colored geometric cover isn't just for looks — its Thermic fabric is a phase-change material built to pull heat away. Beneath it sit 2 inches of Luma cooling foam, 2 inches of Energex Gel Response Foam, a 2-inch convoluted air-flow layer, and a 5-inch super high-density foam base, adding up to an 11-inch mattress.
A queen runs around $999, on the higher side for the box-mattress category but far from the most expensive we've seen — and the Queen size has reportedly sold out almost continuously since launch, a sign customers think the price is fair. Nest rarely runs discount codes, leaning on free shipping and financing instead, and the bed ships with a 100-day trial and a 10-year warranty.
Why We Love It
- Strong pressure relief and full-body support, with no reports of sleeper pain
- Sleeps surprisingly cool for a dense foam bed — nearly as cool as $3,000 spring mattresses, per customer reports
- Low motion transfer despite the firm, supportive feel
- Striking, functional cover with phase-change cooling fabric
- 100-day trial and 10-year warranty
- Strong demand — the Queen size has been sold out almost continuously since launch
Considerations
- Firmer, less plush top layer — support is prioritized over softness
- Some customers reported mild off-gassing on unboxing
- Nest rarely offers discount codes or coupons on this bed
Our Hands-On Review
The 7/10 firmness comes from a dense top foam that favors support over plushness, and it shows: we found no reports of sleeper pain, and the 2-inch sinkage kept things supportive without feeling like sinking into the bed. Motion transfer stayed low despite the firmness, so a restless partner is less likely to wake you.
Temperature is where the ActiveX stands out most. The Luma Cooling Foam top, Gel Response layer and convoluted air-flow channel beneath work together to keep the bed cool, with customers reporting performance close to spring mattresses costing three times as much.
Nearly as Cool as a $3,000 Spring Mattress
Despite being a dense all-foam bed, customers report the ActiveX sleeps almost as cool as spring mattresses in the $3,000 range — a direct result of its layered cooling construction.
We Recommend This To Readers Who:
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Are extremely active
Extremely active customers who need a firm, supportive bed to recover after exercise.
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Want a cool, responsive bed
Customers who want a cooler mattress with good response — including for intimate nights — will appreciate the cooling foam and gel response layer.
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Sleep on your back
Any back sleepers, especially larger people, benefit from the ActiveX's full-body support.
A Closer Look
What Is the 'Active' Ingredient?
The real magic of the ActiveX happens under its flashy cover, across an 11-inch build engineered to sleep cool while staying firm.
Cover
A brightly colored geometric cover with Thermic phase-change fabric that excels at pulling heat away.
Top Layer
2 inches of ActiveX Luma cooling foam — essential since the top layer runs hottest.
Bottom Layer
5 inches of super high-density foam for the finish and full-body support.
ActiveX Cost
The ActiveX is a little above average for the box-mattress industry, though not the most expensive bed we've reviewed — and the Queen size has been sold out almost since launch.
| Option | Price |
|---|---|
| Twin | $699 |
| Full | $899 |
| QueenPopular | $999 |
| King | $1,299 |
| Cal King | $1,299 |
Good to Know
A Firm, Cool-Sleeping Bed Built for Recovery
The ActiveX trades a little softness for serious support and surprisingly cool sleep — if you're an athlete looking for a bed to recover from a full day of exercise, it's worth a shot.
