Fossil · Waterproof Fitness Trackers & Cases
Fossil s Gen 5 LTE Smartwatch Silicone
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes silicone band with polyurethane-based, with no water-repellent coating named. Water resistance on products like this usually comes from the material and its seals rather than a surface treatment. The brand has published no PFAS statement for it.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Silicone band with polyurethane-based
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.
Skin contact allergen from silicone additives
Silicone bands may contain trace curing agents or colorants; documented allergic contact dermatitis is rare but reported in hypersensitive individuals. Patch testing is available if persistent rash develops after wear.
Polyurethane degradation and microparticle shedding
If present in adhesive or backing, polyurethane can break down under sweat, heat, and UV, shedding microscopic particles. This is slow at body temperature but accelerates if the band is worn in hot, humid environments or exposed to direct sun repeatedly.
Dye migration or colorant leaching
Dark-colored silicone bands may use carbon black or organic dyes; leaching onto skin is minimal but can occur if the band is wet and friction is high (e.g., during intense exercise). No azo dyes or heavy metal pigments are known to be used in Fossil bands.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Lead
Silicone and polyurethane do not accumulate heavy metals during manufacture or use. No recalls or testing reports exist for this product.
Source, ATSDR ↗No Teflon-type coating or volatile fluorine compounds
The band is not non-stick cookware and contains no Teflon-type coating. The polyurethane base does not contain fluorine or release fluorinated gases under normal use.
The full breakdown
What it's made of and why it matters
The Fossil Gen 5 LTE band is silicone with a polyurethane-based component, likely in adhesives or backing layers. Both materials are elastomers chosen for skin contact because they resist leaching under normal wear conditions. Silicone is chemically inert at body temperature and does not release volatile compounds during typical daily use. Polyurethane degradation is slow and occurs mainly under heat, UV exposure, or chemical solvents not encountered in wrist-wear scenarios.
The brand's record and disclosure
Fossil Group has not publicly released PFAS statements or restricted PFAS in wearable bands, but this product carries no documented PFAS coating or water-repellent treatment. The company has faced no major recalls related to smartwatch band chemistry. Fossil does not list chemical certifications (GOTS, Oeko-Tex) for wearables, reflecting typical industry practice for mass-market electronics accessories rather than a red flag.
How it compares in its category
Silicone watch bands are not a material linked to PFAS; they outperform rubber alternatives in durability and hypoallergenic properties. Most competing smartwatches (Apple Watch, Garmin, Fitbit) use silicone or fluorosilicone with similar material profiles. Fossil's polyurethane blend is slightly less common than pure silicone but poses no known added chemical risk versus single-material competitors.
If you buy it
Wash the band regularly with mild soap and water to prevent sweat buildup and skin irritation; silicone absorbs oils and odors but resists bacterial growth better than fabric. Avoid prolonged exposure to heat above 60 degrees Celsius (140°F) and direct sunlight for extended periods, as polyurethane components may soften or discolor. Replace the band if cracking, peeling, or discoloration becomes visible, typically after 1-2 years of daily wear. Store in a cool, dry place when not in use.
What we don’t know
- Basis
- Model estimate, 62% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Fossil has made none
Formulations change between production runs, so check the current label. How we grade.
More waterproof fitness trackers & cases 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.