That’s a great question – we weren’t able to find any information about PFAS use in the Baleaf Laureate hiking pants, although that doesn’t mean they aren’t present. The brand uses eco-friendly packaging and recycled materials, but doesn’t clarify whether its water-resistant coatings are PFAS-free. We recommend reaching out to Baleaf directly for confirmation, and we’ll follow up if we get an answer! Thanks. – Ian