Castelli · Cycling Rain Jackets
Castelli Men's Squall Shell Jacket
Skip until Castelli discloses water-repellent coating chemistry or third-party tests.
Castelli does not publicly disclose whether this shell uses fluorinated water-repellent coating treatments. Water-repellent apparel commonly contains PFAS, but no lab data or brand claims exist for this specific product.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polyamide with water-repellent finish (water-repellent coating)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Castelli Men's Squall Shell Jacket is made of, ingredients and materials
This jacket is polyamide (nylon) with a water-repellent coating (water-repellent coating) finish applied to the outer surface. water-repellent coating coatings shed water through hydrophobic chemistry, and historically most performance outdoor apparel has used legacy fluorinated compounds (PFOA, PFOS, or their replacements) to achieve this effect. Castelli has not disclosed whether this jacket uses fluorinated or fluorine-free water-repellent coating, nor provided any third-party test data. The polyamide base itself is not a hazard concern; the finish is the unknown.
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
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.
Fluorinated water-repellent (water-repellent coating) finish composition
Castelli has not disclosed whether the water-repellent coating is fluorinated (legacy or replacements like GenX, ADONA) or fluorine-free. Given brand silence and the prevalence of fluorinated water-repellent coating in lower-transparency apparel, a fluorinated formulation is likely but unconfirmed. Accumulation in blood and organs over repeated wearing and washing is a known pathway for fluorinated water-repellent coating coatings.
Polyamide (nylon) fiber degradation and microfiber shedding
Polyamide textiles shed microfibers during washing and wear. This jacket's water-repellent coating may accelerate or inhibit shedding depending on coating adhesion and washability; no data is available for this specific model. Microfiber ingestion and inhalation during care and use is a documented exposure route, though health endpoints remain under study.
What’s reassuring
Formaldehyde / VOCs
Polyamide apparel sometimes uses formaldehyde-based resins for wrinkle resistance, color fixing, or durability. No public information exists linking formaldehyde finishes to this jacket model or Castelli's standard practices. This hazard is unlikely but plausible given the brand's overall lack of chemical disclosure.
Source, ATSDR ↗Heavy metals
No recalls or reports of restricted azo dyes or heavy metals in Castelli apparel are on record. Polyamide dyeing can involve azo colorants, but without supply-chain transparency or test data, no specific risk to this jacket is documented.
Source, FDA ↗Flame retardants
Cycling apparel is not typically treated with flame retardants unless marketed as protective or thermal. No evidence suggests Castelli applies flame retardants to this model; this hazard is not a concern for standard cycling shells.
Source, EPA ↗The full breakdown
The brand's record and disclosure
Castelli is an Italian cycling apparel brand owned by Doordash. No public PFAS policy, chemical disclosure statements, or commitments to fluorine-free water-repellent coating are documented. The brand has not responded to major outdoor industry transparency initiatives or produced supply-chain chemical reports. This silence is particularly notable given that cycling apparel competitors increasingly publish water-repellent coating sourcing and safer-chemistry commitments; Castelli's absence from these conversations is a red flag.
How it compares in its category
Many major cycling and outdoor brands (Patagonia, Arc'teryx, Mammut) now offer polyamide shells with fluorine-free water-repellent coating or have publicly committed to phase-outs with timelines. Castelli's lack of any visible sustainability or chemical disclosure page places it below category leaders in transparency. For the same intended use, competitors often provide test reports or third-party certifications (Bluesign, GOTS, or brand-specific safe-chemistry seals) that Castelli does not advertise for this model.
If you buy it
Wash separately from other fabrics using cool water and mild detergent to minimize water-repellent coating reactivation or chemical mobilization. Do not dry-clean, as solvents may interact unpredictably with the fluorinated coating. Expect water-repellent coating performance to degrade after 30-50 washes; reapplication with a consumer water-repellent coating spray or wash-in treatment will be needed. Rotate with other jackets to limit cumulative skin and respiratory exposure to any shedding coating particles.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Castelli has made none
Formulations change between production runs, so check the current label. How we grade.
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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.