Sleep Number ComfortNext Lux

Name: Sleep Number ComfortNext Lux
Brand: Sleep Number
Availability: InStock

Couples who want per-side adjustable firmness plus strong measured motion isolation (8.5/10 in independent lab testing). Consider the limitations: You weigh over 230 lb and sleep on your back or stomach — testers reported excessive sinkage even at higher firmness settings.

Best for Couples Best for Side Sleepers Best for Back Sleepers

Queen Price

$3,999 queen (list)

Checked 2026-08-25

Conditions and details

Frequent promotions discount this (currently $3,399.15). The collection spans $2,999 (12-inch) to $4,499 (14-inch Ultra) queen list.

Sleep Number official

Read the Full Review

Specs & prices checked 2026-08-25 — see notes below.

Quick Verdict

Is the Sleep Number ComfortNext Lux right for you?

Sleep Number ComfortNext Lux. Adjustable-air Tri-Brid. Firmness: Adjustable, Soft (3) to Firm (8). Height: 13 inches. Price snapshot: $3,999 queen (list) (checked 2026-08-25).

Best for: Couples who want per-side adjustable firmness plus strong measured motion isolation (8.5/10 in independent lab testing).

Keep in mind: You weigh over 230 lb and sleep on your back or stomach — testers reported excessive sinkage even at higher firmness settings.

What We Like

✓Couples who want per-side adjustable firmness plus strong measured motion isolation (8.5/10 in independent lab testing).
✓Side sleepers up to about 230 lb chasing deep pressure relief — the 9.5/10 lab rating was the standout result.
✓Sleepers whose firmness preference changes over time and who value real-time adjustment over a fixed feel.

Watch Out For

✗You weigh over 230 lb and sleep on your back or stomach — testers reported excessive sinkage even at higher firmness settings.
✗You need strong edges: edge support measured 6/10, the weakest tested result.
✗You want to avoid mechanical failure modes — pumps, air chambers, and sensors add failure points a foam or coil bed does not have.
✗You are uncomfortable relying on long-term warranty service from a company that sold its assets in a June 2026 Chapter 11 process.

Specs at a Glance

Type: Adjustable-air Tri-Brid
Checked 2026-08-25
Foam and microcoil comfort layers over dual adjustable air chambers with app control.
Sleep Number official
Firmness: Adjustable, Soft (3) to Firm (8)
Checked 2026-08-25
Each side adjusts independently. The numeric range is from the independent test-lab review; Sleep Number markets it simply as adjustable firmness.
Sleep Foundation Test Lab
Height: 13 inches
Checked 2026-08-25
Sleep Number official
Price: $3,999 queen (list)
Checked 2026-08-25
Frequent promotions discount this (currently $3,399.15). The collection spans $2,999 (12-inch) to $4,499 (14-inch Ultra) queen list.
Sleep Number official
Trial: 100-night In-Home Trial
Checked 2026-08-25
Independent testing reports a required 30-night break-in before a return; exchanged products are final sale with no new trial.
Sleep Number official
Delivery: Free doorstep delivery
Checked 2026-08-25
Contiguous US only when ordering online. White Glove setup is $250, or $350 with old-mattress removal; those fees are non-refundable.
Sleep Foundation test report
Returns: Authorized returns within the trial
Checked 2026-08-25
Returns must be pre-authorized and refunds take about 21 days; adjustable bases are final sale. Independent testing reports a $250–$350 pickup fee deducted from mattress refunds.
Sleep Number official
Warranty: 10-year limited warranty
Checked 2026-08-25
Per the current official warranty page; some third-party listings cite 15 years for ComfortNext — get the written warranty before buying. The June 2026 Chapter 11 sale may affect long-term warranty backing.
Sleep Number official
Pressure relief: 9.5 / 10 test-lab rating
Measured data
Sleep Foundation Test Lab
Cooling: 7 / 10 test-lab rating
Measured data
Sleep Foundation Test Lab
Motion isolation: 8.5 / 10 test-lab rating
Measured data
Sleep Foundation Test Lab
Response / bounce: 6.5 / 10 ease-of-movement rating
Measured data
Sleep Foundation Test Lab
Edge support: 6 / 10 test-lab rating
Measured data
Sleep Foundation Test Lab
Noise: Not reported for this model
Not measured

Construction

Foam and microcoil comfort layers over dual adjustable air chambers with app control.

Sizes & Pricing

Size dimensions are from the catalog snapshot checked 2026-08-26. Queen pricing follows the sourced review above; other size prices have not been verified for this version.

Size	Dimensions	Price
Queen	60" x 80"	$3,999

Sleep Number ComfortNext Lux: common questions

How much does the Sleep Number ComfortNext Lux cost?

$3,999 queen (list). Checked 2026-08-25; prices and promotions can change.

Who is the Sleep Number ComfortNext Lux best for?

Couples who want per-side adjustable firmness plus strong measured motion isolation (8.5/10 in independent lab testing).

What are the trial and return terms for the Sleep Number ComfortNext Lux?

100-night In-Home Trial. Authorized returns within the trial. Returns must be pre-authorized and refunds take about 21 days; adjustable bases are final sale. Independent testing reports a $250–$350 pickup fee deducted from mattress refunds.

What warranty does the Sleep Number ComfortNext Lux include?

10-year limited warranty. Per the current official warranty page; some third-party listings cite 15 years for ComfortNext — get the written warranty before buying. The June 2026 Chapter 11 sale may affect long-term warranty backing.

We Ran the Sleep Number ComfortNext Lux Through Our Durability Audit

The Living Review covers long-term sagging risk, owner-reported failures, and how this model holds up at years 1, 3, and 5.

Read the Living Review

Compare the Sleep Number ComfortNext Lux

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Sources & review notes

Exact model — Sleep Number ComfortNext Lux. Checked 2026-08-25. The 13-inch middle model of the ComfortNext line that replaced the c/p/i-series in late 2025 — not the 12-inch ComfortNext, the 14-inch Ultra, or a discontinued numbered model.
Type — Adjustable-air Tri-Brid. Checked 2026-08-25. Foam and microcoil comfort layers over dual adjustable air chambers with app control.
Firmness — Adjustable, Soft (3) to Firm (8). Checked 2026-08-25. Each side adjusts independently. The numeric range is from the independent test-lab review; Sleep Number markets it simply as adjustable firmness.
Height — 13 inches. Checked 2026-08-25.
Price — $3,999 queen (list). Checked 2026-08-25. Frequent promotions discount this (currently $3,399.15). The collection spans $2,999 (12-inch) to $4,499 (14-inch Ultra) queen list.
Trial — 100-night In-Home Trial. Checked 2026-08-25. Independent testing reports a required 30-night break-in before a return; exchanged products are final sale with no new trial.
Delivery — Free doorstep delivery. Checked 2026-08-25. Contiguous US only when ordering online. White Glove setup is $250, or $350 with old-mattress removal; those fees are non-refundable.
Returns — Authorized returns within the trial. Checked 2026-08-25. Returns must be pre-authorized and refunds take about 21 days; adjustable bases are final sale. Independent testing reports a $250–$350 pickup fee deducted from mattress refunds.
Warranty — 10-year limited warranty. Checked 2026-08-25. Per the current official warranty page; some third-party listings cite 15 years for ComfortNext — get the written warranty before buying. The June 2026 Chapter 11 sale may affect long-term warranty backing.
Firmness — Adjustable, Soft (3) to Firm (8). Measured data. Dual air chambers adjust each side independently via the app; the range is the lab-reported firmness span, not a single fixed feel.
Pressure relief — 9.5 / 10 test-lab rating. Measured data. The standout result: the 3.5-inch contouring comfort layer earned the lab’s top pressure-relief marks, especially for side sleepers.
Cooling — 7 / 10 test-lab rating. Measured data. Middle-of-the-road temperature control; the contouring foam traps some heat despite the airflow-oriented microcoils and air chambers.
Motion isolation — 8.5 / 10 test-lab rating. Measured data. A strength even at higher firmness settings — the thick foam top absorbed nearly all partner movement in lab testing.
Response / bounce — 6.5 / 10 ease-of-movement rating. Measured data. The contouring top layer blunts the embedded microcoils; combination sleepers reported "fighting the foam" when repositioning.
Edge support — 6 / 10 test-lab rating. Measured data. The weakest tested attribute: the perimeter compresses noticeably with little reinforcement, a concern for higher-weight sleepers and anyone with mobility limits.
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