International OEKO-TEX Association
OEKO-TEX Standard 100 Testing Methods and Limit Values
OEKO-TEX Standard 100
OEKO-TEX Standard 100 Class 1 Infant Mattress Test
Deconstructs OEKO-TEX Standard 100 Class 1 certification requirements, skin contact limits, and heavy metal testing.
Class 1 Pediatric Standard
Direct answer summary
OEKO-TEX Standard 100 Class 1 is the most stringent textile safety certification worldwide, calibrated specifically for products intended for infants and toddlers up to 36 months of age. It tests every single mattress component - outer ticking, threads, buttons, zippers, fire barriers, and foam cores - for more than 1,000 harmful chemicals, ensuring zero carcinogenic dyes, zero pesticides, skin-neutral pH (4.0 to 7.5), and ultra-low heavy metal migration.
Key points
Product Class 1 enforces the strictest threshold limits for infants up to 3 years old.
Tests every single component: covers, sewing thread, internal foam, and flame barriers.
Guarantees skin-friendly pH (4.0 to 7.5) and absolute zero banned azo dyestuffs.
Interactive example
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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 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 |
|---|---|---|---|
| Certification Class | Product Class 1 (Infants & Toddlers) | Strictest Global Standard | pass |
| Skin-Neutral pH Balance | 4.0 - 7.5 (Non-Irritating Dermal Range) | Physiological Skin Tolerance | pass |
| Banned Azo Colorants | 0% Prohibited (Zero Carcinogenic Amines) | Zero Carcinogenic Dyes | pass |
| Heavy Metals Migration | Below Stringent Pediatric Detection Limits | Zero Toxic Metal Bioavailability | 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 OEKO-TEX Label
Look for the OEKO-TEX Standard 100 label and 8-digit certificate number.
Watch for: Never buy infant mattresses that lack independent third-party chemical testing.
- 02
Verify Certificate on Website
Enter the certificate number into the official OEKO-TEX Label Check portal.
Watch for: Avoid products with expired or counterfeit OEKO-TEX tags.
- 03
Check Component Scope
Confirm the certificate covers the full mattress system rather than just the outer fabric.
Watch for: Do not assume certified covers mean the internal polyurethane core is safe.
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)
Consumer Product Safety Improvement Act (CPSIA)
CPSIA Lead & Phthalates