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Images: Sleep Number. Shown size and configuration may vary.

Sleep Number

ComfortNext Lux

Name: Sleep Number ComfortNext Lux
Brand: Sleep Number

Best for: Micro coils plus air

A 13″ Tri-Brid smart bed that adds micro coils to foam and air chambers, with per-side, auto-adjusting firmness in the app.

Good to know: No Twin size, and Sleep Number doesn’t publish its layer order or thicknesses.

Type: Adjustable air 'Tri-Brid' (micro coils + foam + air), smart/app-controlled
Height: 13″
Sizes: 5 ready-made

Pick it if

You sleep on your side
You share the bed

Skip it if

You sleep hot
You need firm edges

From independent reviewers’ findings, credited below.

Your size

38 × 80 in · 13″ tall

Where to get it

sleepnumber.comQueen $3,999 · 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

Micro coils plus air

Good

A 13″ Tri-Brid smart bed that adds micro coils to foam and air chambers, with per-side, auto-adjusting firmness in the app.
3 firmness choices: Adjustable firmness per side via app, Labelled 'Extra support' on the collection page, Responsive Air auto-adjusts firmness
Trial: 100-night trial
Height: 13″

Think about

No Twin size, and Sleep Number doesn’t publish its layer order or thicknesses.
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 Lux was found. One hands-on editorial test exists.

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

Sleep Foundation (Jun 2026): Three testers each spent a week on it. It gave excellent pressure relief and strong motion isolation, and side sleepers of all weights were well supported. Heavier back and stomach sleepers found it too soft. The edges compress noticeably, and the contouring foam can hold some heat. Size not stated; affiliate links disclosed on page. Read it ↗
Apartment Therapy (Aug 2026): In a one-week test, a couple with very different firmness preferences each found a setting they slept well on. Drawbacks: dialing in the right setting took a few nights, cooling was weaker than expected, and the middle dipped slightly at soft settings. Brand offered the test unit; one-week test; 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

No owner posts naming the Lux were found. Sleep Number's site shows 4.87/5 from 116 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

Twin XL38 × 80 in13″Full · 54-inch54 × 75 in13″Queen60 × 80 in13″King76 × 80 in13″California king72 × 84 in13″

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 LuxSleep 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	$3,999	$4,789	$1,650	$1,454
Height	13″	13″	9.5″	8″
Trial	100 nights	365 nights	See terms	See terms
Odd sizes	None	None	3	3
Expert reviews	2	3	None yet	None yet

What’s inside

1Foam layers (unnamed)
2Micro coils
3Adjustable air chambers

Feel: Adjustable firmness per side via app, Labelled 'Extra support' on the collection page, Responsive Air auto-adjusts firmness
Height: 13″
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?

Sleep Number's Tri-Brid design: foam layers, micro coils and adjustable air chambers. Sleep Number claims superior relief for hips, shoulders, knees and lower back and 67% more built-in cooling materials plus superior airflow. The page does not publish layer order or thicknesses.

How firm is it?

Adjustable firmness per side via app, Labelled 'Extra 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?

5 sizes, 13″. 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?

Checked 2026-10-15. Specs and terms can change.