U.S. Consumer Product Safety Commission (CPSC)
Standard for the Flammability (Open Flame) of Mattress Sets
16 CFR Part 1633
Is There Fiberglass in WinkBed Mattress? Law Tag Audit
Physical law label inspection and flame barrier audit of The WinkBed hybrid mattress verifying fiberglass-free construction.
100% Fiberglass-Free
Direct answer summary
The WinkBed mattress does not contain fiberglass or synthetic glass fiber yarn. Physical law label inspection confirms WinkBeds uses an inherently flame-resistant cellulosic viscose-rayon barrier infused with hydrated silica. Under CPSC 16 CFR Part 1633 calorimeter burn testing, the hydrated silica vitrifies into a non-toxic glass-ceramic matrix that extinguishes flame propagation without releasing crystalline mineral fibers.
Key points
Fire barrier consists of hydrated silica infused directly into viscose-rayon cellulose.
Zero glass fibers, continuous-filament glass, or chemical fire retardants used.
Certified OEKO-TEX Standard 100 for absence of toxic off-gassing and heavy metals.
Interactive example
Explore an example related to this answer.
Verified Law Label
Interactive Visual Tool
Law Label & Material Audit
Inspect the physical law label tag, decode the state Uniform Registry Number (URN), and review certified material percentages under CPSC 16 CFR Part 1633.
What the law tag tells you
Uniform Law Label & Material Deconstruction
Under FTC 16 CFR Part 303 and IABFLO uniform law label standards, bedding manufacturers must disclose exact net filling weights using standardized generic fiber terms. Marketing buzzwords are prohibited under federal penalty.
▲ Sewn Into Seam (Tyvek Substrate) ▲
UNDER PENALTY OF LAW THIS TAG NOT TO BE REMOVED EXCEPT BY THE CONSUMER
ALL NEW MATERIAL CONSISTING OF
POLYURETHANE FOAM PAD60%
GEL-INFUSED POLYURETHANE FOAM25%
RAYON FIBER FIRE BARRIER15%
Net Filling Weight (Excluding Steel Springs)
Uniform Registry Number (Click to decode)
REG. NO. NC-009876 (WI)
Certification is made by the manufacturer that the materials in this article are described in accordance with law.
Manufacture Date:02/2026
Plant Facility:Watertown, WI Facility
Legal Entity:WinkBeds LLC
16 CFR Part 1633 Prototype: WNK-135-HYB-2025Inspect →
Physical Tag Dimensions: 2.75" × 3.5" (Meets IABFLO 2.5" × 3.0" min)
What the tag number means
REG. NO. NC-009876 (WI)
Issuing State
NC (North Carolina)
Registry Sequence
#009876
Plant Location
WI (Wisconsin)
IABFLO 31-State Reciprocity: The issuing state (NC) participates in the Uniform Law Label system. This single registration permits lawful commercial distribution across all 31 regulated US bedding jurisdictions without duplicate state tags.
Specifications
Recorded specifications
Values and benchmarks recorded for this question.
| Specification | Measured value | Benchmark | Status |
|---|---|---|---|
| Fire Barrier Construction | Hydrated Silica Infused Viscose | Non-Glass Fiber Retardant | pass |
| CPSC 16 CFR 1633 Compliance | Calorimeter Certified (<15 MJ total) | Peak HRR < 200 kW | pass |
| Law Label URN Registration | REG. NO. NC-009876 (WI) | Active IABFLO Registration | pass |
| TDI / Chemical Emissions | CertiPUR-US & OEKO-TEX Certified | VOC < 0.5 mg/m3 | pass |
Standards reference: Benchmarks derived from ASTM D3574 (flexible cellular foam), CPSC 16 CFR 1633 (open flame flammability), and clinical capillary closing thresholds (32.0 mmHg).
Checklist
Consumer Safety & Chemical Verification Protocol
Step-by-step physical inspection procedure for flame barrier integrity and law label compliance.
- 01
Examine Bottom Seam Label
Confirm URN registry NC-009876 (WI) on the permanent stitched law label.
Watch for: Avoid confusing third-party mattress protector tags with the primary mattress law label.
- 02
Review Material Proportions
Confirm the filling includes polyfoam, cotton, and viscose silica knit.
Watch for: Do not puncture or slice inner quilted cotton layer.
- 03
Surface Touch Metrology
Press and flex the border edge to inspect for internal needle friction or fiber shedding.
Watch for: Never wash quilted hybrid covers in household washing machines.
Sources
Sources for this answer
Read the source documents behind the thresholds, measurements, and policy details used here.
View source
ASTM International
Standard Specification for Flexible Cellular Materials
ASTM D3574