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WinkBeds · mattress research

GravityLux · Firm · 11"

A structured mattress research page for GravityLux — Firm — 11": name and history, construction, materials, firmness, performance evidence, dimensions, policies, sources, and unresolved questions.

Updated 3 August 2026Research only · not physically tested by Nappedia
30-second evidence brief

Bottom line

Firm 11-inch Brand-direct catalog; options may change the materials.

Quick mattress answers

What the research suggests

  • Reported
  • Results vary
  • Not enough public information
Results vary
Sleep positionNot enough public information

The reviewed sources do not provide a clear position finding for this mattress.

Results vary
Body rangeNot enough public information

The reviewed sources do not provide a clear body-weight finding for this mattress.

Results vary
CoolingNot enough public information

The reviewed sources do not provide a clear cooling finding for this mattress.

Results vary
Motion isolationNot enough public information

The reviewed sources do not provide a clear motion isolation finding for this mattress.

Results vary
Support designProgression Foam

Zoned transition foam.

Reported
Published feelFirm (7/10)

Manufacturer, retailer, archived, or independent source as listed below.

BuildBrand-direct catalogProfile11"SourcesLinked below
Evidence suggests it may suit

Readers researching the exact 11-inch configuration rather than the family name alone.

Shoppers comparing the published Firm (7/10) feel within the GravityLux lineup.

Researchers who want source dates, purchase-channel warnings, and unresolved material details visible before visiting the merchant.

Evidence suggests checking first

Nappedia has not slept on, opened, or laboratory-tested this mattress.

Do not transfer construction or performance results from another height, firmness, tier, retailer SKU, or production generation.

Public sources do not provide a complete production-lot bill of materials.

Research synthesis · no Nappedia physical testRead the full conclusion ↓
Nappedia visual reconstruction

Brand-published construction map

Sequence described by the brand
Editorial reconstruction of a cut-open mattress representing all-foam construction for GravityLux · Firm · 11"Representative construction archetype · source-supported sequence at rightEditorial reconstruction · not a teardown
  1. 1
    Tencel cover and gel quiltingTencel surface with gel-infused foam; the number of gel layers varies by firmness.Location not pinned: the raster does not resolve this component separately.
  2. 2
    AirCell memory foamOpen-cell, non-visco memory foam with firmness-specific ILD language.Location not pinned: the raster does not resolve this component separately.
  3. 3
    Progression FoamZoned transition foam.Location not pinned: the raster does not resolve this component separately.
  4. 4
    Atlas Core1.8 lb/ft³ support foam.Location not pinned: the raster does not resolve this component separately.
Research-based reconstruction: The cut-open image represents the documented all-foam construction and the adjacent list follows the cited public construction record. The illustration does not claim an unpublished thickness or exact visual proportion. Layer thicknesses, colors, and visual proportions are schematic. Localized lumbar components are not separately visible. This is not a teardown or physical inspection by Nappedia.
Scope before conclusions

This dossier covers only GravityLux — Firm — 11", documented as current brand-direct. It does not silently combine other firmnesses, heights, tiers, checkout upgrades, retailer SKUs, or generations. Nappedia has not physically tested this mattress.

01

Editorial synthesis

Evidence behind the conclusion

Analysis

Firm 11-inch Brand-direct catalog; options may change the materials.

GravityLux, Firm, 11" is listed as current brand-direct. This page covers the 11-inch profile, Firm (7/10) feel, and Brand-direct catalog version. It uses the brand documents and independent sources listed below. Results from other heights, options, and generations are not presented as tests of this mattress.

Who the cited evidence may support

These are research signals, not a comfort guarantee.

  • Readers researching the exact 11-inch configuration rather than the family name alone.
  • Shoppers comparing the published Firm (7/10) feel within the GravityLux lineup.
  • Researchers who want source dates, purchase-channel warnings, and unresolved material details visible before visiting the merchant.

What to check before choosing

These limitations may change whether the mattress fits.

  • Nappedia has not slept on, opened, or laboratory-tested this mattress.
  • Do not transfer construction or performance results from another height, firmness, tier, retailer SKU, or production generation.
  • Public sources do not provide a complete production-lot bill of materials.
Confidence statement

High confidence in the researched identity. Confidence is narrower for undisclosed construction, production-lot consistency, and performance claims not tested on this exact configuration.

02

Identity and core facts

At a glance

Exact record
OfficialGravityLux — Firm — 11"

Marketed-name evidence: GravityLux — Firm — 11-inch.

1, 2
Family
AnalysisGravityLux

Brand-direct catalog collection or channel.

1, 3
Type
AnalysisBrand-direct catalog

Record type: Current model.

1
Brand firmness
OfficialFirm (7/10)1, 2
Profile
Official11"

Height is treated as an identity field because a same-named mattress may change construction across profiles or generations.

1, 2
Status
OfficialCurrent brand-direct

Current; first documented 2020-10 or earlier

1, 2
Sizes documented
OfficialTwin; Twin XL; Full; Queen; King; California King1
Research confidence
AnalysisHigh

Identity confidence does not imply confidence in every performance or material claim.

1, 2
03

Top to bottom

Published construction

This architecture is normalized from public documents. It is not our teardown, and it does not convert brand claims into verified composition.

  1. 01
    Official

    Tencel cover and gel quilting

    Tencel surface with gel-infused foam; the number of gel layers varies by firmness.

    Supplies the initial cushioning and moisture-management layer. Exact fiber percentages are not published.

    1, 4
  2. 02
    Official

    AirCell memory foam

    Open-cell, non-visco memory foam with firmness-specific ILD language.

    Designed for contouring with faster response than conventional memory foam. Numeric density and ILD are not published.

    1
  3. 03
    Official

    Progression Foam

    Zoned transition foam.

    Adds firmer pushback through the lumbar area and more give under shoulders and legs according to the manufacturer.

    1
  4. 04
    Official

    Atlas Core

    1.8 lb/ft³ support foam.

    Provides the all-foam support base; this is the one numeric density published by WinkBeds.

    1
04

Chemicals and claims

Materials & certifications

Official

Foam certification

WinkBeds states its foams are CertiPUR-US certified

CertiPUR-US applies to qualifying polyurethane foam, not automatically to the complete assembled mattress.

4
Official

Fire barrier

Cotton-and-rayon blend stated

The reviewed public material does not publish complete fiber percentages or supplier documentation.

4, 1
Not found / unresolved

Fiberglass

Explicit complete product-specific statement not found

Absence of a statement is not evidence that fiberglass is present or absent.

4
Not found / unresolved

Whole-mattress emissions certification

Not established for this exact record

Foam certification and textile claims should not be described as whole-mattress certification.

4

Representative editorial textures for orientation only. Nappedia did not inspect a physical material sample.

05

Brand scale vs measured samples

Firmness evidence

Official

Published feel

Firm (7/10)

Manufacturer, retailer, archived, or independent source as listed below.1, 2
Analysis

Version boundary

This page applies the feel only to the 11-inch current brand-direct record.

Identity reconciliation by name, profile, status, and evidence dates.1, 2
Independent

Independent calibration

The independent source covers this family or redesign, but findings are not silently transferred to every height, tier, firmness, or optional upgrade.

Source-scope comparison; no Nappedia physical test.7
06

Method, sample, and source kept attached

Performance evidence matrix

A result describes a particular test method and sample. When reputable reviewers disagree, this file records the disagreement instead of inventing a consensus score.

Official

Fit positioning

Brand-published

The linked product source positions this Firm (7/10) configuration within the GravityLux family.

Manufacturer positioning only; not a Nappedia recommendation or physical test.3, 1
Independent

Independent performance evidence

Source-scoped

A family-level independent source is included. Its tests apply only to the mattress and generation it actually evaluated, not automatically to this exact option.

Evidence-scope audit across the identity and corroborating sources.7, 2
Analysis

Motion, pressure, cooling, and edge support

Editorial synthesis

See the independent source for its tested configuration; this dossier does not convert another configuration's measurements into a score for this one.

Conservative synthesis; no invented score and no cross-generation transfer.7
Not found / unresolved

Durability

Evidence gap

A population-level long-term failure rate was not found.

Warranty length, short-term reviews, and material descriptions do not establish real-world failure incidence.6, 2

No exact sample table is shown. A version-matched independent measurement set was not located for this mattress. Related family reviews remain in the sources used without being presented as tests of this mattress.

07

Exact published measurements

Dimensions & weight

Published profile11"

6 documented size rows: Twin, Twin XL, Full, Queen, King, and more.

SizeDimensionsWeightSource
Twin38" × 75" × 11" profileExact configuration weight not found in the identity record1
Twin XL38" × 80" × 11" profileExact configuration weight not found in the identity record1
Full54" × 75" × 11" profileExact configuration weight not found in the identity record1
Queen60" × 80" × 11" profileExact configuration weight not found in the identity record1
King76" × 80" × 11" profileExact configuration weight not found in the identity record1
California King72" × 84" × 11" profileExact configuration weight not found in the identity record1
08

The contract matters

Trial, return, warranty & delivery

Policy snapshotFive purchase terms to verify before ordering
  1. 01Trial120 nights; 30-night minimum
  2. 02ReturnEligible return pickup and refund described as free
  3. 03Firmness exchange$49; replacement receives a 60-night trial
  4. 04WarrantyLifetime Limited Warranty for qualifying original purchasers
OfficialTrial
120 nights; 30-night minimum

The current direct-purchase policy is limited to one mattress per customer, household, and shipping address.

5, 1
OfficialReturn
Eligible return pickup and refund described as free

Original delivery or setup fees may not be refundable.

5
OfficialFirmness exchange
$49; replacement receives a 60-night trial5
OfficialWarranty
Lifetime Limited Warranty for qualifying original purchasers

Coverage, support requirements, defect thresholds, exclusions, and proof-of-purchase rules control.

6
09

Do not mix generations

Previous names & version history

  1. 2020-10 or earlier
    Analysis

    First documented appearance

    This is the earliest evidence recovered for this exact researched identity, not necessarily the manufacturing launch date.

    1
  2. Current at audit
    Analysis

    Current or recent evidence boundary

    The page remains a dated research snapshot; later construction or policy changes may occur.

    1, 2
  3. 3 Aug 2026 research audit
    Analysis

    Official dimensions control over secondary descriptions that round the profile to 12 inches. The marketed identity is Firm at 11 inches.

    The record was normalized by brand, family, collection, generation, height, firmness, and options before publication.

    1, 2
10

Questions found during research

Common questions, answered from the evidence

These themes recur across brand help centers and independent review research: model name, firmness, sizing, construction, base compatibility, materials, and purchase terms. They are not presented as search-volume rankings.

Which exact mattress does this page cover?

This page covers “GravityLux · Firm · 11".” Its documented status is Current; first documented 2020-10 or earlier, and the published options are “Brand-direct catalog · Firm (7/10) · 11" profile.” Findings from another height, firmness, retailer version, or generation are not automatically treated as equivalent. 1, 2

What firmness is documented for this mattress?

Firm (7/10) Manufacturer, retailer, archived, or independent source as listed below. 1, 2

How tall is this mattress, and which sizes were documented?

The published profile for this mattress is 11". Documented sizes: Twin, Twin XL, Full, Queen, King, California King. 1, 2

What is inside this mattress?

The cited construction record lists Tencel cover and gel quilting, AirCell memory foam, Progression Foam, Atlas Core. The visual is a research reconstruction, not a Nappedia teardown. 1, 4

What did the reviewed sources say about fiberglass or the flame barrier?

Cotton-and-rayon blend stated The reviewed public material does not publish complete fiber percentages or supplier documentation. 4, 1

What trial, return, or exchange terms apply to this mattress?

Trial: 120 nights; 30-night minimum The current direct-purchase policy is limited to one mattress per customer, household, and shipping address. Return: Eligible return pickup and refund described as free Original delivery or setup fees may not be refundable. 5, 1

What independent evidence is available, and which configuration did it test?

A family-level independent source is included. Its tests apply only to the mattress and generation it actually evaluated, not automatically to this exact option. Evidence-scope audit across the identity and corroborating sources. 7, 2

11

The blank spaces are data

What is missing

“Not found” means the fact was not located in the reviewed public sources as of the page review date. It does not prove the feature or material is absent.

Complete bill of materials
Not found

Layer thicknesses, densities, IFDs, adhesives, suppliers, and production-lot changes are not fully public for this exact record.

1, 4
Exact version-matched physical testing
Not performed by Nappedia

Independent family-level findings are not converted into exact-configuration scores.

7
Configuration-specific weight
Not found in the identity record1
Long-term failure incidence
Not established

Warranty terms and self-selected reviews cannot establish a population failure rate.

6, 2
12

Related research

Continue researching

These links stay inside the same mattress family first, then add only closely related current alternatives.

Brand-direct catalog · Current modelGravityLux · Medium · 11"Medium (5/10) · 11"Brand-direct catalog · Current modelGravityLux · Soft · 11"Soft (4/10) · 11"Brand-direct catalog · Current modelEcoCloud Hybrid · Medium · 12.5"Medium (5/10) · 12.5"Brand-direct catalog · Current modelWinkBed · Firmer · 13.5"Firmer / Firm · 13.5"Brand-direct catalog · Current modelWinkBed · Luxury Firm · 13.5"Luxury Firm · 13.5"Brand-direct catalog · Current modelWinkBed · Plus · 13.5"Plus / firm heavy-duty option · 13.5"

Decision comparisons containing this mattress

Saatva Contour5 vs. WinkBeds GravityLux
13

Open every underlying document

Sources used

Official pages establish what the seller publishes. Independent sources are used for observed performance, measurements, teardowns, and version checks. Neither source class is treated as infallible. No physical test was conducted by Nappedia.

  1. 1

    winkbeds.com · Official product or support record

    GravityLux — Firm — 11": primary identity record ↗Accessed 3 Aug 2026
  2. 2

    tuck.com · Corroborating identity, generation, specification, or review evidence

    GravityLux — Firm — 11": corroborating record ↗Accessed 3 Aug 2026
  3. 3

    WinkBeds · Official current catalog and company claims

    WinkBeds current mattress catalog ↗Accessed 3 Aug 2026
  4. 4

    WinkBeds · Official specifications, materials, trial, exchange, and warranty summary

    WinkBeds FAQ ↗Accessed 3 Aug 2026
  5. 5

    WinkBeds · Official direct-purchase trial policy

    120-Night Trial Returns & Exchanges ↗Accessed 3 Aug 2026
  6. 6

    WinkBeds · Official warranty contract

    WinkBeds Lifetime Limited Warranty ↗Accessed 3 Aug 2026
  7. 7

    Sleep Foundation · Independent family-level hands-on and laboratory review

    GravityLux Mattress Review 2026 ↗Accessed 3 Aug 2026
← GravityLux familyOfficial product page ↗