Fitbit · Waterproof Smartphone Cases
Google Fitbit Air Screenless Health & Fitness Tracker
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes plastic housing, elastomer band, 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
Plastic housing, elastomer band
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.
Elastomer band degradation and leaching
Elastomer bands can degrade with sweat, sunlight, and heat over extended use. Minor volatile organic compounds may off-gas as the material ages, though this is not established as harmful at typical skin-contact levels.
Skin sensitivity or contact dermatitis from band material
Individual cases of rash or irritation from wearables are documented in user forums and medical literature, typically tied to sweat accumulation or sensitivity to elastomer additives rather than inherent toxicity. No widespread pattern has been established for Fitbit specifically.
Microplastics
Elastomer bands can shed microscopic particles during friction with skin or when washing. Ingestion or inhalation risk is negligible in normal use; environmental persistence is the primary concern.
Source, EPA ↗What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
No recalls or public testing have detected lead, cadmium, or other heavy metals in Fitbit Air housing or band materials. Standard plastic and elastomer polymers used in wearables are not expected to contain these substances.
Source, FDA ↗Adhesive or cement leaching from band attachment
No product-specific data on adhesives or cements used in band attachment. Typical wearable adhesives are epoxy or polyurethane-based and are not known to leach into skin under normal use conditions.
The full breakdown
What it's made of and why it matters
The Fitbit Air uses a rigid plastic housing (likely polycarbonate or ABS) and elastomer band (rubber-like polymer). Neither material is known to leach hazardous compounds under normal wear conditions. Plastic housings in wearables are generally stable because they are not heated, eaten from, or in prolonged contact with fatty foods or high temperatures that would trigger leaching.
The brand's record and disclosure
Fitbit has not published a detailed PFAS stance or chemical disclosure statement, though the product carries no coating described that would require PFAS. The company has not faced major recalls or safety controversies tied to material hazards in fitness trackers. No public testing has revealed lead, cadmium, or phthalates in Fitbit band or housing materials.
How it compares in its category
Fitness trackers are lower-risk than cookware or food storage because they avoid heat, food contact, and complex surface treatments. The Fitbit Air's plastic-and-elastomer construction is standard for the category and poses fewer material concerns than textile bands (dyes, resins) or metal casings (nickel, lead solder). Competitor trackers (Apple Watch, Garmin) use similar materials with comparable safety profiles.
If you buy it
Avoid exposing the band to prolonged heat (saunas, hot water above 50C) or harsh solvents, which can degrade elastomer and trigger minor leaching. Replace the band every 2-3 years if visible wear or odor develops. Rinse regularly with mild soap and water; do not soak. Store in a cool, dry place away from direct sunlight to minimize polymer degradation.
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
- Fitbit has made none
Formulations change between production runs, so check the current label. How we grade.
More waterproof smartphone 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.