Limited evidence page. The mattress identity is documented, but the available public evidence is limited. Unverified details are clearly marked instead of inferred.
Bottom line
Medium-Firm 12.5-inch Specialty; options may change the materials.
What the research suggests
- Reported
- Results vary
- Not enough public information
The reviewed sources do not provide a clear position finding for this mattress.
The reviewed sources do not provide a clear body-weight finding for this mattress.
Helix Plus, Medium-Firm, 12.5", GlacioTex Cooling Pillow Top is listed as current factory-sewn checkout configuration.
The reviewed sources do not provide a clear motion isolation finding for this mattress.
Support architecture is described only where the source states it.
Manufacturer, retailer, archived, or independent source as listed below.
Readers researching the exact 12.5-inch configuration rather than the family name alone.
Shoppers considering higher-weight sleepers seeking reinforced support; this is Helix positioning, not our physical-test result.
Researchers who want source dates, purchase-channel warnings, and unresolved material details visible before visiting the merchant.
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.
The reviewed sources name 3 components for Helix Plus · Medium-Firm · 12.5" · GlacioTex Cooling Pillow Top, but do not support one reliable top-to-bottom sequence. No cut-open layer stack is shown because that would imply evidence we do not have.
This dossier covers only Helix Plus — Medium-Firm — 12.5" — GlacioTex Cooling Pillow Top, documented as current factory-sewn checkout configuration. It does not silently combine other firmnesses, heights, tiers, checkout upgrades, retailer SKUs, or generations. Nappedia has not physically tested this mattress.
Editorial synthesis
Evidence behind the conclusion
Medium-Firm 12.5-inch Specialty; options may change the materials.
Helix Plus, Medium-Firm, 12.5", GlacioTex Cooling Pillow Top is listed as current factory-sewn checkout configuration. This page covers the 12.5-inch profile, Medium-Firm feel, and Specialty 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 12.5-inch configuration rather than the family name alone.
- Shoppers considering higher-weight sleepers seeking reinforced support; this is Helix positioning, not our physical-test result.
- 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.
High confidence in the researched identity. Confidence is narrower for undisclosed construction, production-lot consistency, and performance claims not tested on this exact configuration.
Identity and core facts
At a glance
- Exact record
- OfficialHelix Plus — Medium-Firm — 12.5" — GlacioTex Cooling Pillow Top
Marketed-name evidence: Helix Plus — Medium-Firm — 12.5 in — GlacioTex Cooling Pillow Top.
1, 2 - Type
- AnalysisSpecialty
Record type: Configuration.
1 - Profile
- Official12.5"
Height is treated as an identity field because a same-named mattress may change construction across profiles or generations.
1, 2 - Sizes documented
- OfficialTwin; Twin XL; Full; Queen; King; California King; Short Queen; RV King1
Named components
Published component map
The official page names these components but does not render one reliable top-to-bottom sequence. They are not numbered as a confirmed stack. This is not our teardown or independent verification of composition.
- •Official
Documented surface
Product-specific cover or comfort surface described by the linked official or retailer record.
Establishes the marketed record without importing a different collection's construction.
1 - •
- •Not found / unresolved
Support system
Support architecture is described only where the source states it.
Exact counts, gauges, densities, and suppliers remain unresolved unless documented.
2
Chemicals and claims
Materials & certifications
Foam certification
Helix states qualifying foams are CertiPUR-US certifiedCertification scope and production date should be matched to the exact mattress when this matters.
4
Cover composition
Specialty collection materials documented at collection levelThe official guide distinguishes Core, Luxe, and Elite covers, but retailer and historical records require their own source match.
4, 1
Fiberglass
Current product pages state fiberglass-freeNappedia has not opened the mattress; current claims should not be applied to older units automatically.
1, 4Complete chemical and adhesive inventory
Not foundPublic pages do not provide a complete formulation, adhesive list, supplier list, or production-lot bill of materials.
4Representative editorial textures for orientation only. Nappedia did not inspect a physical material sample.
Brand scale vs measured samples
Firmness evidence
Published feel
Medium-Firm
Manufacturer, retailer, archived, or independent source as listed below.1, 2Version boundary
This page applies the feel only to the 12.5-inch current factory-sewn checkout configuration record.
Identity reconciliation by name, profile, status, and evidence dates.1, 2Independent calibration
No version-matched independent firmness measurement was located for this exact record.
Source-scope comparison; no Nappedia physical test.2Method, 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.
Fit positioning
Brand-publishedHelix positions this family for higher-weight sleepers seeking reinforced support.
Independent performance evidence
Evidence gapNo exact, version-matched independent laboratory result was found for this record.
Motion, pressure, cooling, and edge support
Evidence gapConfiguration-specific measurements were not established.
Durability
Evidence gapA population-level long-term failure rate was not found.
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.
Exact published measurements
Dimensions & weight
8 documented size rows: Twin, Twin XL, Full, Queen, King, and more.
| Size | Dimensions | Weight | Source |
|---|---|---|---|
| Twin | 38" × 75" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
| Twin XL | 38" × 80" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
| Full | 54" × 75" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
| Queen | 60" × 80" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
| King | 76" × 80" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
| California King | 72" × 84" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
| Short Queen | 60" × 74" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
| RV King | 72" × 80" × 12.5" profile | Exact configuration weight not found in the identity record | 1 |
The contract matters
Trial, return, warranty & delivery
- 01Trial120 nights; 30-day minimum
- 02Return or exchangeEligible direct orders may be exchanged or returned within the trial
- 03WarrantyLimited lifetime for mattresses purchased on or after 1 February 2025
- 04Purchase channel warningDirect-purchase terms shown
- OfficialReturn or exchange
- Eligible direct orders may be exchanged or returned within the trial
Helix limits exchanges and publishes process conditions in its terms.
6 - OfficialWarranty
- Limited lifetime for mattresses purchased on or after 1 February 2025
Years 1–10 are non-prorated for covered defects; later replacement charges are prorated. Earlier purchases follow earlier terms.
7
Do not mix generations
Previous names & version history
- 2025-04Analysis
First documented appearance
This is the earliest evidence recovered for this exact researched identity, not necessarily the manufacturing launch date.
1 - 2026-07-28
- 3 Aug 2026 research auditAnalysis
The official Plus checkout variant publishes a 12.5-inch finished height. Helix includes Plus among the seven Core Collection mattresses eligible for the factory-sewn GlacioTex pillow top.
The record was normalized by brand, family, collection, generation, height, firmness, and options before publication.
1, 2
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 “Helix Plus · Medium-Firm · 12.5" · GlacioTex Cooling Pillow Top.” Its documented status is Current; first documented 2025-04, and the published options are “Specialty · Medium-Firm · 12.5" 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?
Medium-Firm 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 12.5". Documented sizes: Twin, Twin XL, Full, Queen, King, California King, Short Queen, RV King. 1, 2
What is inside this mattress?
Reviewed sources name Documented surface, Comfort system, Support system, but one reliable top-to-bottom order was not verified. 1, 2
What did the reviewed sources say about fiberglass or the flame barrier?
Current product pages state fiberglass-free Nappedia has not opened the mattress; current claims should not be applied to older units automatically. 1, 4
What trial, return, or exchange terms apply to this mattress?
Trial: 120 nights; 30-day minimum The current direct-purchase trial begins on delivery. Return or exchange: Eligible direct orders may be exchanged or returned within the trial Helix limits exchanges and publishes process conditions in its terms. 6, 1
Which important details are still unverified?
Complete bill of materials: Not found Layer thicknesses, densities, IFDs, adhesives, suppliers, and production-lot changes are not fully public for this exact record. Exact version-matched physical testing: Not performed by Nappedia Independent family-level findings are not converted into exact-configuration scores. Configuration-specific weight: Not found in the identity record 1, 4, 2
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.
2 - Configuration-specific weight
- Not found in the identity record1
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
helixsleep.com · Official product or support record
Helix Plus — Medium-Firm — 12.5" — GlacioTex Cooling Pillow Top: primary identity record ↗Accessed 3 Aug 2026 - 2
support.helixsleep.com · Corroborating identity, generation, specification, or review evidence
Helix Plus — Medium-Firm — 12.5" — GlacioTex Cooling Pillow Top: corroborating record ↗Accessed 3 Aug 2026 - 3
Helix Sleep · Official current lineup, height, firmness, size, and positioning guide
Which Helix mattress is right for me? ↗Accessed 3 Aug 2026 - 4
Helix Sleep · Official collection-level materials guide
What materials are used in my Helix Mattress? ↗Accessed 3 Aug 2026 - 5
Helix Sleep · Official cover and support-upgrade guide
What optional upgrades are available for my Helix mattress? ↗Accessed 3 Aug 2026 - 6
Helix Sleep · Official direct-purchase trial policy
Helix 120 Night Sleep Trial ↗Accessed 3 Aug 2026 - 7
Helix Sleep · Official mattress warranty contract
Helix Mattress Limited Lifetime Warranty ↗Accessed 3 Aug 2026