Suunto · Water-Resistant Smart Rings & Bands
Suunto Women's Core Three-Ring Steel Buckle Nylon Watch Band
Lower concern; nylon and steel lack typical PFAS triggers.
This nylon fabric band with steel buckle has no known PFAS coatings. Suunto provides no PFAS disclosure.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Nylon fabric with steel buckle hardware
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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.
Azo dyes in nylon fabric
Nylon watch bands are typically dyed with synthetic colorants. If azo dyes are used, they can theoretically release carcinogenic amines under perspiration and abrasion, but this risk is low for watch bands that contact skin only on the wrist and are not repeatedly wetted or heated.
Bacterial or mold growth
Nylon fabric can retain moisture and sweat, creating an environment for bacterial growth or mold if not dried regularly. This is a hygiene concern rather than a chemical hazard but can cause skin irritation. Regular washing and air-drying mitigate this risk.
Dye migration or color bleed
Lower-quality nylon bands may shed dye onto skin or clothing, particularly if wet or in contact with sweat. This is cosmetically objectionable and can cause temporary staining but is not a systemic toxicity hazard.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
Nylon fabrics are sometimes treated with formaldehyde-based resins for wrinkle resistance or water repellency. No specific reports or testing for this product are available; the risk is lower than in untreated apparel because watch bands experience minimal washing and wear time.
Source, ATSDR ↗Nickel or chromium in steel hardware
Stainless steel (typically 300-series alloys) used in watch buckles contains chromium and may contain nickel. Suunto has not disclosed the exact alloy grade. Nickel release is generally minimal with quality stainless steel, but individuals with severe nickel sensitivity may experience localized contact dermatitis after prolonged wear.
The full breakdown
What it's made of and why it matters
This band is woven nylon fabric paired with stainless steel buckle hardware. Nylon itself is a thermoplastic polyamide that does not leach plasticizers like BPA or phthalates under normal wear conditions (it is not softened with these additives the way flexible PVC or silicone products are). The steel buckle is inert and does not corrode or release metals into skin under typical humidity and sweat exposure.
The brand's record and disclosure
Suunto (owned by Amer Sports) has not published specific safety certifications or chemical disclosure statements for watch bands. The brand maintains a general safety and warranty process but does not prominently communicate material sourcing or testing for chemical contaminants in textile accessories. No recalls or safety controversies for this product line are publicly documented.
How it compares in its category
Nylon watch bands are lower-risk than elastomer or silicone alternatives because they lack synthetic rubber components that can off-gas volatile compounds or leach additives. They are also simpler than fabric-over-rubber hybrid bands, which may contain adhesives or flame retardants. Steel buckles present lower concern for corrosion and contact dermatitis compared to plated zinc or nickel alloys that can corrode and cause contact dermatitis in sensitive users.
If you buy it
Wash the band periodically with mild soap and water to remove sweat and bacteria buildup, especially in the buckle mechanism. Avoid prolonged exposure to bleach or strong solvents, which can degrade nylon dye. The nylon will soften slightly with age and moisture but will not delaminate or fail rapidly if maintained. Replace if the fabric tears, frays significantly, or the buckle hinge becomes loose, as this can impair fit and comfort.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Suunto has made none
Formulations change between production runs, so check the current label. How we grade.
More water-resistant smart rings & bands 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.