PFAS score
Allbirds · Hiking Pants
Allbirds Women's Natural Legging - New Women | Color: Blue/Yellow | Size: 2XL
Lower PFAS concern likely, natural fiber legging with no obvious waterproofing, but Allbirds lacks public PFAS transparency.
Allbirds' leggings are primarily wool-based, which carries lower inherent PFAS risk than synthetic fabrics treated for water or stain resistance. The brand does not disclose PFAS chemistry or claim PFAS-free status.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Merino wool blend (primary); construction details not disclosed
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More hiking pants 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.