Yawnder Reviews
Verdict: Editorial take — ComfortNext Ultra is a specialist purchase rather than a default one.
Short answer: ComfortNext Ultra is the top of the ComfortNext collection: $4,499 for a Queen, 14 inches, the same Tri-Brid micro-coil-foam-air build as the Lux with Sleep Number’s top ComfortNext comfort configuration. It is the plushest bed in the lineup that is not part of the Climate collection — and if temperature is not your problem, it is the most mattress Sleep Number will sell you.
Who the Sleep Number ComfortNext Ultra is for
ComfortNext Ultra is the top of the ComfortNext collection: $4,499 for a Queen, 14 inches, the same Tri-Brid micro-coil-foam-air build as the Lux with Sleep Number’s top ComfortNext comfort configuration. It is the plushest bed in the lineup that is not part of the Climate collection — and if temperature is not your problem, it is the most mattress Sleep Number will sell you.
- Great fit: Heavier sleepers, couples with very different body weights, and anyone who wants the plushest non-Climate Sleep Number.
- Build: 14″ tall, ComfortNext collection.
- Smart features: Full Sleep Number app: ResponsiveAir, nightly sleep score and insights.
- Terms: 100-night In-Home Trial with mattress returns handled through Sleep Number Customer Service; shipping/home-delivery fees are not refunded and return shipping is the customer’s responsibility. For mattresses purchased March 23, 2026 or later, Sleep Number currently lists 2 years of full warranty coverage plus 8 additional years of limited coverage, and HSA/FSA eligibility on the mattress.
Check today’s ComfortNext Ultra price
Yawnder earns a commission if you buy through our links. It does not change the price you pay or what we write. Sleep Number is not stocked in our San Diego showroom — this review is based on published construction and pricing, Sleep Number’s own owner documentation and our category testing of adjustable-air beds.
How a Sleep Number actually works
Every Sleep Number bed is an air bed at heart: an air chamber under each side of the mattress, inflated or deflated to a firmness number from 0 to 100, with foam and (on the newer models) micro-coils layered on top. Couples get two independent numbers on any size Queen and up.
What separates the 2026 models is what sits above the air: foam only on the ComfortMode beds, thicker targeted foam on ComfortNext, micro-coils in the Tri-Brid Lux and Ultra, and active temperature hardware in the Climate collection. Everything else — the pump, the numbers, the trial — is shared.
Sleep Number ComfortNext Ultra specifications
| Collection | ComfortNext (mid tier, flagship) |
|---|---|
| Profile | 14 inches |
| Construction | Tri-Brid — responsive micro-coils, foam and dual air chambers, top ComfortNext comfort configuration |
| Comfort focus | Hips, shoulders, knees and lower back |
| Smart features | Sleep Number app, ResponsiveAir, nightly sleep score |
| Firmness | Adjustable 0–100 per side, plus automatic adjustment |
| Queen list price | $4,499 |
| Terms | 100-night In-Home Trial with mattress returns handled through Sleep Number Customer Service; shipping/home-delivery fees are not refunded and return shipping is the customer’s responsibility. For mattresses purchased March 23, 2026 or later, Sleep Number currently lists 2 years of full warranty coverage plus 8 additional years of limited coverage, and HSA/FSA eligibility on the mattress. |
How it performs, category by category
Pressure relief
Sleep Number positions Ultra as the most cushioned ComfortNext option. Its added height and thicker microcoil layer may appeal to people seeking more surface cushioning, but we have not pressure-mapped the model. Try it at different air settings and check shoulder and hip comfort.
Support for heavier bodies
The adjustable air chambers let partners choose different settings. Larger sleepers should compare Ultra and Lux in person, including how well each supports the hips at a comfortable pressure. We have not established a tested weight cutoff or measured how either model performs above 250 pounds.
Cooling
Ultra includes cooling materials but does not provide active temperature control. Bedding and room conditions affect warmth; we have not measured its overnight temperature or compared it with the Lux and Climate models.
Motion isolation
Separate air settings may help couples tailor support, but we have not measured motion transfer. Try turning over while a partner lies still before deciding.
Edge support
Test sitting and lying near the edge. Sleep Number says the microcoils sit in the mattress midsection; we have not measured perimeter support or confirmed a coil-reinforced perimeter.
Practicalities
Fourteen inches plus a base is a tall bed. Measure your entry height, and buy sheets rated for 16-inch depth or the corners will pop.
Editorial assessment of ComfortNext Ultra
Our assessment uses manufacturer specifications and experience with the adjustable-air category. Yawnder has not tested this exact mattress, so we do not assign it performance scores.
Methodology: Yawnder has not instrument-tested this exact Sleep Number model. These observations are an editorial interpretation of manufacturer documentation and our experience evaluating adjustable-air mattresses; do not compare these estimates to our measured mattress data.
Pros and cons
What we like
- Adjustable firmness and support for couples.
- Thicker midsection microcoils than ComfortNext Lux, according to Sleep Number.
- Sleep insights and ResponsiveAir features.
- Compare the exact price difference with Lux at checkout.
What we would change
- $4,499 for a Queen, and still no active cooling.
- Fourteen inches is a tall, heavy bed that needs deep-pocket bedding.
- For average-weight sleepers the Lux gets you most of the way for less.
- Still an air bed — pump, hoses and remote are wear items.
The 2026 Sleep Number lineup compared
Sleep Number cut its range from twelve mattresses to seven in March 2026 and reorganised them into three collections: ComfortMode (remote only), ComfortNext (app, ResponsiveAir and the Tri-Brid micro-coil builds) and Climate (active temperature control). Here is where the ComfortNext Ultra sits.
| Model | Collection | Height | Smart features | Queen list |
|---|---|---|---|---|
| ComfortMode | ComfortMode | 10″ | Remote only | $1,599 |
| ComfortMode Lux | ComfortMode | 11″ | Remote only | $2,099 |
| ComfortNext | ComfortNext | 12″ | App + ResponsiveAir | $2,999 |
| ComfortNext Lux | ComfortNext | 13″ | App + ResponsiveAir | $3,999 |
| ComfortNext Ultra (this review) | ComfortNext | 14″ | App + ResponsiveAir | $4,499 |
| ClimateCool | Climate | 12″ | App + ResponsiveAir | $5,499 |
| Climate360 | Climate | 13″ | App + cooling & warming | $10,249 |
Last verified Oct. 4, 2026. Official sources: Sleep Number ComfortNext guide and Sleep Number Returns & Exchanges. The ComfortNext family supports SleepIQ technology and Responsive Air. Prices and promotions change frequently, so use Sleep Number’s live listing rather than assuming a fixed discount percentage.
Where this model fits
- Versus ComfortNext Lux: compare the thicker Ultra microcoils and extra inch of height with the actual price difference. Try both models at your preferred air settings.
- Versus ClimateCool: $1,000 more for active cooling and a 12-inch build. Choose on temperature, not on plushness — the Ultra is the softer bed.
- Versus a $4,500 luxury hybrid: a Saatva or Tempur-Pedic at this price gives you better materials; the Sleep Number gives you two firmness settings and nightly data. Pick the trade that matters in your household.
Also read our full Sleep Number model comparison, is a Sleep Number worth it? and the Sleep Number cost guide.
Frequently asked questions
Where are the microcoils?
Sleep Number says the ComfortNext Ultra uses 2.4-inch individually wrapped microcoils within the mattress midsection; the Lux uses 1.5-inch microcoils. They are not described as a perimeter coil system. See the manufacturer’s component guide.
What should I know about returns and the base?
Sleep Number’s 100-night mattress trial requires authorization through customer service. Its returns policy says a one-time exchange makes the replacement final sale with no new trial; adjustable and FlexFit bases are final sale. Delivery and return charges can affect the refund. Check all charges and exclusions before ordering.
What happens if the bed feels as though it is losing air?
Sleep Number recommends checking for loose hose connections or kinks and confirming the pump’s power connection. Contact the manufacturer if the issue persists. The app controls firmness; a compatible smart remote is sold separately.
How much is the ComfortNext Ultra?
$4,499 list for a Queen. It is the most expensive bed in the ComfortNext collection and sits $1,000 below ClimateCool.
How tall is the ComfortNext Ultra?
14 inches — the tallest mattress in the 2026 Sleep Number lineup.
Is the Ultra worth it over the Lux?
Compare the two in person. Ultra adds height and thicker midsection microcoils, but we have not established which model is better for a particular weight.
Does the Ultra cool actively?
No. It uses cooling materials and micro-coil airflow. Active cooling is exclusive to ClimateCool and Climate360.
Can it go on an adjustable base?
Yes. Sleep Number sells it with their own bases, and the Tri-Brid build flexes without damage.
The verdict
Editorial verdict. Consider Ultra if you want Sleep Number’s deepest ComfortNext build and individually adjustable firmness. Compare it with Lux in person and check the complete price, including the base and return terms.
Shop the ComfortNext Ultra at Sleep Number
Reviewed by Ben Trapskin · Yawnder Reviews
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