Allbirds Anytime Bralette Light Grey Xs
Lower PFAS concern for a basic cotton-blend bralette; no water-repellent coating or stain treatment implied.
Organic cotton and TENCEL lyocell are materials without inherent PFAS risk. Allbirds doesn't advertise water-repellent or stain-resistant finishes, suggesting no intentional water-repellent coating or Teflon-family coating coatings.
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Material
Organic cotton blend with TENCEL lyocell
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Allbirds Anytime Bralette Light Grey Xs is made of, ingredients and materials
This bralette combines organic cotton with TENCEL lyocell, a regenerated cellulose fiber made via a closed-loop solvent process that recovers 99% of solvents. Organic cotton eliminates synthetic pesticide residues and avoids the heavy metal and dye contamination risks of conventionally grown cotton. Neither material requires flame retardants, formaldehyde-based wrinkle treatments, or water-repellent coatings, which removes several common textile hazard pathways. The blend is naturally breathable and low-chemical by construction.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Elastane (spandex) degradation and leaching under heat
The bralette contains elastane for stretch and recovery. Prolonged heat (hot water, high dryer) can hydrolyze elastane bonds, shortening functional life but not creating acute toxicological risk. Proper cool-wash care mitigates this concern.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
Organic cotton and TENCEL lyocell do not require formaldehyde-based finishing treatments. No formaldehyde-release hazard is known or documented for Allbirds cotton-blend apparel.
Source, ATSDR ↗Heavy metals
Light grey is a simple, low-chromophore color requiring minimal dye load. Bluesign certification requires supplier screening for banned colorants. No heavy-metal dye contamination has been reported for this brand.
Source, FDA ↗Antimony in polyester
This product is primarily cotton and lyocell; neither requires antimony catalysts in manufacturing. Antimony risk is relevant only to pure polyester or polyester-heavy blends, which this is not.
Flame retardants
Cotton and TENCEL are not legally required to carry flame retardant treatments for apparel. No evidence of added flame retardant chemicals in Allbirds bralettes.
Source, EPA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Allbirds has publicly committed to PFAS reduction across its range and uses bluesign-certified suppliers for textiles, indicating third-party chemical screening. The brand holds B-Corp certification and publishes annual impact reports detailing material sourcing and chemical compliance. No recalls, formaldehyde violations, or heavy-metal dye contamination have been reported for Allbirds apparel in public records. The company's stance is notably transparent on sustainability but does not routinely publish full chemical test results by product line.
How it compares in its category
Most sports bras use synthetic polyester or nylon with water-repellent coating (water-repellent coating) treatments that often contain PFOA or PFOS-legacy compounds; this product avoids both. Conventional bras also risk formaldehyde-based shrinkage controls and antimony catalysts in polyester; organic cotton-TENCEL sidesteps these. Competitors using Lycra/spandex blends carry lower hazard profiles than full synthetic bras, but introduce elastane chemical processing. This bralette's material choice places it at the lower end of chemical risk for the category.
If you buy it
Wash in cool water with mild detergent to preserve elastane longevity; avoid bleach and fabric softeners, which degrade fibers and can trap residual chemicals. Dry on low heat or air-dry; high heat will reduce elastane recovery over time and void the product's functional lifespan. Replace when elastic no longer recovers after wear (typically 18-24 months of regular use). No special storage precautions needed; standard cool, dry drawer is sufficient.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Allbirds has made none
Formulations change between production runs, so check the current label. How we grade.
More sports bras grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.