Global Standard gGmbH
Global Organic Textile Standard (GOTS) Version 7.0
GOTS Standard
GOTS Organic Wool Flame Barrier Burn Test
Examines GOTS organic virgin wool flame barrier mechanics, keratin protein charring, and Limiting Oxygen Index.
Nature's Premier Flame Barrier
Direct answer summary
GOTS-certified organic virgin wool is nature's most effective flame barrier. Wool possesses a high Limiting Oxygen Index (LOI) of 25.5%, meaning it requires an atmosphere of 25.5% oxygen to sustain combustion - substantially higher than ambient air (20.9%). In CPSC 16 CFR Part 1633 testing, wool fibers curl, swell, and form a dense nitrogen-rich keratin char that smothers flames and leaves zero toxic chemical residues.
Key points
Limiting Oxygen Index of 25.5% makes wool self-extinguishing in ambient atmosphere (20.9% O2).
Keratin proteins cross-link when heated to produce a resilient, non-melting carbon barrier.
Certified GOTS organic wool guarantees zero synthetic chemical pesticides, scouring agents, or retardants.
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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 |
|---|---|---|---|
| Limiting Oxygen Index (LOI) | 25.5% (Self-Extinguishing) | Atmospheric Oxygen is 20.9% | pass |
| Moisture Regain Capacity | 16% - 18% Natural Moisture | High Inherent Thermal Mass | pass |
| Organic Certification | GOTS (Global Organic Textile Standard) | Strict Organic Chain of Custody | pass |
| Combustion Residue | Soft Nitrogen-Rich Carbon Ash | Zero Melting or Glass Filaments | 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
Check for GOTS License Number
Look for the Control Union or GOTS certifier license code on the mattress law label.
Watch for: Never buy mattresses claiming 'organic wool' without a valid certifier license number.
- 02
Perform Wool Touch Metrology
Feel the loft and springy crimp of the needle-tufted wool batting through the cover.
Watch for: Avoid chemical moth-proofing sprays which ruin natural organic certifications.
- 03
Verify Wool Batting Density
Confirm the mattress specifies at least 1.5 to 2.5 lbs/sq yard of wool batting.
Watch for: Do not purchase hybrid beds that use thin wool dusting over synthetic glass socks.
Sources
Sources for this answer
Read the source documents behind the thresholds, measurements, and policy details used here.
View source
U.S. Consumer Product Safety Commission (CPSC)
Standard for the Flammability of Mattress Sets
16 CFR Part 1633