Arc'teryx · Synthetic Athletic Wear
Arc'teryx Men's Atom SL Lightweight Hoodie
Unknown water-repellent coating treatment, Arc'teryx silent on PFAS, skip if concerned.
Atom SL uses water-repellent coating on polyester, standard for technical apparel. Arc'teryx discloses no PFAS stance; legacy products often used fluorocarbon water-repellent coating.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polyester with water-repellent coating water-repellent finish
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent treatments have historically contained PFAS chemicals.
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
water-repellent coating chemistry (fluorine-based or unknown)
Arc'teryx does not disclose whether the water-repellent coating treatment uses PFAS or fluorine-free chemistry. If PFAS-based, repeated laundering and body contact present low but non-zero exposure routes; fluorine-free water-repellent coating alternatives carry lower concern. This opacity is the primary chemical risk for this product.
Degradation of water-repellent coating finish releasing particles or residual chemicals
As the water-repellent coating degrades over time (especially with heat or aggressive washing), microparticles or residual finish chemistry may shed. Risk is low but higher if water-repellent coating is PFAS-based. Proper cool-water laundering and avoidance of heat drying reduce this risk.
What’s reassuring
Formaldehyde / VOCs
No published recalls or warnings for formaldehyde in Arc'teryx polyester apparel. Modern polyester finishing typically avoids heavy formaldehyde use, though trace residuals from manufacture may occur. Not a documented concern for this brand or product line.
Source: ATSDR ↗Azo dyes (synthetic dyes)
Polyester apparel from established outdoor brands like Arc'teryx rarely uses banned azo dyes (which can release carcinogenic amines). No warnings on record for this product. Standard industry compliance is expected.
Antimony in polyester
Antimony is sometimes used as a polyester catalyst in synthesis. Arc'teryx does not disclose antimony levels, but finished garment migration into skin is minimal and not a documented health concern for polyester apparel. No recalls or warnings for this product.
The full breakdown
What it's made of and why it matters
The Atom SL is 100% polyester with a water-repellent coating (water-repellent coating) finish applied to the outer face. Polyester itself is chemically stable in normal wear and laundering, but the water-repellent coating treatment is the variable: most commercial water-repellent coating finishes historically relied on PFAS-based chemistry (perfluorocarbons), though some manufacturers have shifted to fluorine-free alternatives. Arc'teryx has not publicly specified which chemistry they use on this model, leaving the water-repellent coating composition unclear.
The brand's record and disclosure
Arc'teryx is owned by Salomon (Amer Sports) and does not publish detailed chemical disclosures or PFAS commitment statements comparable to Patagonia or The North Face's public pledges. The brand has not been subject to major apparel safety recalls in recent years. Their silence on water-repellent coating treatment chemistry is typical of mid-market outdoor brands, though transparency has become a competitive expectation in this category over the past five years.
How it compares in its category
Lightweight synthetic insulation hoodies occupy a crowded market. Competitors like Patagonia Nano Puff and The North Face ThermoBall now disclose fluorine-free water-repellent coating options; Arc'teryx's lack of such labeling positions it as less transparent by current standards. Quality and durability of the garment itself are well-regarded, but chemical transparency has become a differentiation factor among premium outdoor brands.
If you buy it
Wash in cool to warm water (under 40°C) with mild detergent; avoid fabric softeners and high heat dryers, which can degrade the water-repellent coating finish and potentially mobilize residual chemicals. Expect the water-repellent coating to degrade after 30-50 washes; it can be re-applied with commercial products or professional service. If PFAS exposure is a personal concern, contact Arc'teryx directly to confirm water-repellent coating chemistry before purchase, as this information is not publicly available.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Arc'teryx has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Synthetic Athletic Wear
Arc'teryx
Men's Cormac Logo Shirt
100% polyester knit, no water-repellent treatment
Heavy metals
Limited concern
Antimony in polyester
Limited concern
Microplastic shedding
Moderate concern
Lower concern, basic polyester shirt with no water-repellent coating finish.
⚠Risky category by default
HOKA
Men's Race Day Singlet
polyester mesh and fabric
Heavy metals
Limited concern
Formaldehyde / VOCs
Limited concern
Microplastic shedding on wear and wash
Moderate concern
Antimony in polyester polymer
Limited concern
Lower concern, no waterproofing or water-repellent coating treatment typical for race singlets.
⚠Risky category by default
HOKA
Men's Race Day Singlet Crew Neck Running Tank top
Polyester/nylon blend athletic knit, no disclosed water-repellent coating or stain treatment
Antimony in polyester
Limited concern
Microplastic shedding
Limited concern
Minimal concern; no performance coatings on this running tank.
⚠Risky category by default
More synthetic athletic wear 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.