Google · Waterproof Fitness Trackers & Cases
Google Fitbit Air Screenless Fitness & Health Tracker
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes 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
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 degradation and microparticle shedding
Long-term elastomer wear under sweat, friction, and UV exposure may produce microscopic particles; no specific data on Fitbit Air shedding, but any elastomer product can degrade over 2-3 years of daily wear. Risk is low for skin contact but non-zero for ingestion if particles are transferred via hands to mouth.
Bacterial colonization of band seams and crevices
Elastomer bands trap moisture and dead skin in seams and underside if not cleaned regularly. This is a hygiene issue (dermatitis, folliculitis) rather than chemical toxicity but relevant to product use. Fitbit does not document antimicrobial treatment of the Air band.
Allergic sensitization to elastomer additives
Some elastomers contain accelerators, stabilizers, or colorants (e.g., sulfur compounds, zinc oxide, carbon black) that rarely trigger contact dermatitis or urticaria in sensitive users. Google does not disclose the elastomer formulation. Risk is low but non-zero for prolonged skin contact.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Adhesive or sealant leachables in device housing
The device housing is sealed but not documented as using solvent-based adhesives. Google does not publish material declarations for the casing or internal seals. No recalls or complaints related to off-gassing have been reported for Fitbit Air.
Heavy metals
No lead, cadmium, or mercury have been reported in Fitbit products. The device meets FCC and CE standards, which require material screening. No independent testing data is publicly available for the Air specifically.
Source, FDA ↗The full breakdown
What it's made of and why it matters
The Fitbit Air uses an elastomer band, a synthetic rubber polymer that resists sweat, moisture, and daily wear without the coating degradation risks of painted or enameled metal. Elastomers are chemically inert under normal skin contact and do not leach heavy metals like cadmium or lead. The screenless design means no glass lens adhesives or display materials that could off-gas or degrade. This is a relatively simple material profile for a wearable.
The brand's record and disclosure
Google does not publish detailed material safety data sheets or PFAS statements for most Fitbit products, which is common practice in the wearables industry but limits transparency. Fitbit has faced no major recalls or documented toxicity complaints in the fitness tracker category. Google's broader product safety stance includes compliance certifications but rarely extends to detailed chemical disclosure for accessories like bands.
How it compares in its category
Elastomer bands are the category standard for waterproof wearables and show lower concern for corrosion and leaching compared to metal bands, which can corrode and leach, silicone variants which may contain trace additives, or cloth straps which can harbor bacteria if not cleaned. Screenless devices avoid the adhesive and coating hazards present in display-heavy trackers. The Fitbit Air sits in the low-complexity, low-hazard end of the fitness tracker spectrum.
If you buy it
Rinse the elastomer band regularly with fresh water after sweating or swimming to prevent salt and chlorine buildup, which can degrade the material over time. Avoid prolonged exposure to direct sunlight or heat above 50C (122F) to minimize elastomer brittleness. Replace the band if visible cracking, discoloration, or softening occurs. The lack of a replaceable battery in screenless trackers means the device itself will eventually require recycling, but the band can be disposed with rubber waste.
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
- Google 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.