U.S. Consumer Product Safety Commission (CPSC)
Standard for the Flammability of Mattress Sets
16 CFR Part 1633
Purple Mattress Fiberglass Law Label Disclosure
Breakdown of Purple mattress law labels, fire barrier knit sock, and non-toxic silica barrier verification.
100% Fiberglass-Free
Direct answer summary
Purple mattresses do not contain fiberglass or continuous glass filament yarns. Law label audits across Purple Original, Restore, and Rejuvenate models verify that Purple employs a proprietary stretch-knit fire barrier sock engineered with non-toxic silica-infused rayon and polyester fibers. When subjected to CPSC 16 CFR Part 1633 open flames, this barrier vitrifies to prevent the underlying hyper-elastic GelFlex Grid from catching fire.
Key points
Fire sock consists of silica-impregnated rayon knit without fiberglass fibers.
GelFlex Grid polymer core is non-toxic, hypoallergenic, and CertiPUR-US certified.
Complies with CPSC 16 CFR Part 1633 without hazardous mineral fiber fragmentation.
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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 PAD55%
RESIN-TREATED COTTON BATTING25%
RAYON FIBER / WOOL CHAR BARRIER20%
Net Filling Weight (Excluding Steel Springs)
Uniform Registry Number (Click to decode)
REG. NO. UT-12345 (FL)
Certification is made by the manufacturer that the materials in this article are described in accordance with law.
Manufacture Date:04/2026
Plant Facility:Tampa, FL
Legal Entity:Saatva Inc. / Bedding Industries of America (BIA)
16 CFR Part 1633 Prototype: STV-115-HYB-2026Inspect →
Physical Tag Dimensions: 2.75" × 3.75" (Meets IABFLO 2.5" × 3.0" min)
What the tag number means
REG. NO. UT-12345 (FL)
Issuing State
UT (Utah)
Registry Sequence
#12345
Plant Location
FL (Florida)
IABFLO 31-State Reciprocity: The issuing state (UT) 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 |
|---|---|---|---|
| Flame Retardant Barrier | Silica Infused Rayon Knit | 100% Fiberglass-Free | pass |
| Grid Material Composition | Hyper-Elastic Polymer Gel | Food-Contact Grade Polymer | pass |
| Calorimeter Heat Release | < 120 kW Peak HRR | 16 CFR 1633 Standard (<200 kW) | pass |
| Law Label Verification | REG. NO. UT-004312 (UT) | Active Utah Manufacturing Plant | 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
Inspect Under-Ticking Tag
Locate the white statutory law label stitched to the bottom border underside.
Watch for: Never machine-wash the exterior zippered knit cover.
- 02
Examine Fire Sock Weave
Verify the non-woven barrier is dense, soft to the touch, and non-prickly.
Watch for: Avoid contact with sharp implements that could rip the silica knit barrier.
- 03
Check Gel Grid Integrity
Ensure the columnar GelFlex Grid sits securely without wall collapse.
Watch for: Never pull or stretch individual polymer ribs.
Sources
Sources for this answer
Read the source documents behind the thresholds, measurements, and policy details used here.
View source
Code of Federal Regulations
Consumer Product Safety Rule on Flammability
16 CFR 1633