Adjustable airBrand product image
1 / 1Images: Sleep Number. Shown size and configuration may vary.
ComfortNext Ultra
Best for: Top-tier ComfortNext support
The 14″ top ComfortNext: foam, micro coils and air chambers, with per-side auto-adjusting firmness and 175% more cooling materials than ComfortMode, per Sleep Number.
Good to know: Queen and larger only, and at 14″ you’ll want deep-pocket sheets.
- Type
- Adjustable air 'Tri-Brid' (micro coils + foam + air), smart/app-controlled
- Height
- 14″
- Sizes
- 3 ready-made
Pick it if
- You sleep hot
From independent reviewers’ findings, credited below.
60 × 80 in · 14″ tall
Where to get it
- sleepnumber.comQueen $4,499 · checked Oct 15 See price
- Split kingSplit King, Split California King See the list
Returns: 100-night trial Details
We may earn a commission if you buy. Check the price for your exact size and height on the seller’s site.
The short version
Worth a look if
- Top-tier ComfortNext support
Good
- The 14″ top ComfortNext: foam, micro coils and air chambers, with per-side auto-adjusting firmness and 175% more cooling materials than ComfortMode, per Sleep Number.
- 3 firmness choices: Adjustable firmness per side via app, Labelled 'Ultra support' on the collection page, Responsive Air auto-adjusts firmness
- Trial: 100-night trial
- Height: 14″
Think about
- Queen and larger only, and at 14″ you’ll want deep-pocket sheets.
- No owner reviews we could verify yet
Based on the maker’s published specs and terms, and the owner reviews linked below. We haven’t slept on it. Something wrong? Tell us.
What owners say
No owner reviews we can verify yet A small set of real reviews, each linked to its source. Not a star rating.
No attributable owner feedback specific to ComfortNext Ultra was found.
What people liked
No supported praise summary in the sample.
What to weigh up
No substantive concern verified in this small sample. This is a gap in the evidence, not proof of no drawbacks.
What independent reviewers found
- PureWow (Jun 2026): In a few weeks of home use, a reviewer with scoliosis woke with less back pain and had fewer night sweats with the bed's cooling materials. Drawbacks: finding the right setting took several nights, the bed is very tall, and it looks clinical when the base is fully raised. First-person editorial test, not a lab review; size not stated; site notes some items may be gifted; affiliate links disclosed on page. Read it ↗
Their testing, in our words. We haven’t tested these mattresses ourselves, and we don’t repeat their scores.
Sources & sample limits
None found. Sleep Number's site shows 4.66/5 from 61 reviews (brand-hosted). Sample: 0 owner reports.
Sold only since 2026-03-23.
Research checked October 14, 2026. These are sourced observations, not our own product tests or a star rating.
Every size it comes in
Taken from the maker’s size options, in the inches it publishes. Tap a size to compare every mattress made in it.
How it compares
Beside the most similar mattresses from other brands.
| ComfortNext UltraSleep Number | SolaireSaatva | 9.5″ Innomax Gemini Air BedRest Right Mattress | 8″ Innomax Vista Air BedRest Right Mattress | |
|---|---|---|---|---|
| Type | Adjustable air 'Tri-Brid' (micro coils + foam + air), smart/app-controlled | Adjustable air | Adjustable air | Adjustable air |
| Queen price | $4,499 | $4,789 | $1,650 | $1,454 |
| Height | 14″ | 13″ | 9.5″ | 8″ |
| Trial | 100 nights | 365 nights | See terms | See terms |
| Odd sizes | None | None | 3 | 3 |
| Expert reviews | 1 | 3 | None yet | None yet |
What’s inside
- 1Foam layers (unnamed)
- 2Micro coils
- 3Adjustable air chambers
- Feel
- Adjustable firmness per side via app, Labelled 'Ultra support' on the collection page, Responsive Air auto-adjusts firmness
- Height
- 14″
- Custom sizes
- Not offered for this model
Returns and ordering
Trial and returns
100-night trial
Before you order
- Measure inside the frame, not the old mattress
- Check clearance above for the height you pick
- Make sure your base supports it
- Buy sheets in the same exact size
Questions
What is it made of?
Tri-Brid design: foam layers, micro coils and adjustable air chambers. Sleep Number claims maximum relief for hips, shoulders, knees and lower back and 175% more built-in cooling materials with maximum airflow from the added micro coils. The page does not publish layer order or thicknesses.
How firm is it?
Adjustable firmness per side via app, Labelled 'Ultra support' on the collection page, Responsive Air auto-adjusts firmness That’s the maker’s description; we haven’t measured it.
Which sizes and heights can I get?
3 sizes, 14″. See every size. Confirm your exact size and height with the seller.
Are the reviews about this exact mattress?
No owner reviews we can verify yet. Sold only since 2026-03-23.
Where did this information come from?
- ComfortNext Ultra ProductGroup JSON-LD (SKUs xCN14, no Twin XL/Full, prices, rating 4.66/61); 14in; 'Ultra support'; Tri-Brid gallery asset (cnu-mattress)
- sizes checked 2026-10-17: JSON-LD ProductGroup sizes match (Queen, King, California King, Split King, Split California King, FlexTop King, FlexTop California King); the size selector on each size URL gives Queen 60″ × 80″; King 76″ × 80″; California King 72″ × 84″; Split King 76″ × 80″; Split California King 72″ × 84″; FlexTop King 76″ × 80″; FlexTop California King 72″ × 84″. Split King removed from oddSizes (it is a standard split size); no made-to-measure sizes offered.
Checked 2026-10-15. Specs and terms can change.
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