Fitbit · Waterproof Fitness Trackers & Cases
Google Fitbit Air Active Band
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes elastomer band, likely rubber or silicone, 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, likely rubber or silicone
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.
Contact dermatitis or skin sensitization from elastomer additives
Silicone and synthetic rubber bands may contain accelerators, vulcanizing agents, or processing aids that can trigger reaction in sensitive skin. Fitbit does not publicly disclose the full additive package; patch testing before continuous wear is advised if you have a history of rubber sensitivity.
Bacterial or mold growth in crevices
Elastomer bands can trap moisture and sweat in gaps between band and device connector if not cleaned regularly. This creates a microenvironment for bacteria or fungal growth, particularly in humid climates. Weekly rinse and air drying mitigate this risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Degradation and microparticle shedding over time
No established reports of elastomer bands shedding visible microparticles during normal wear or sweat contact. However, deep cracks or surface breakdown from UV exposure or age can generate small elastomer fragments; replacement before severe damage prevents this.
Heavy metals
No recalls or public safety reports link Fitbit elastomer band dyes to lead, cadmium, or other heavy metal contamination. Modern silicone colorants are typically low-risk, but brand does not publish full pigment specifications.
Source, FDA ↗Allergic reaction to fragrance or UV additives
Fitbit bands are not scented or marketed as containing fragrance additives. Some synthetic rubber formulations do include UV stabilizers; these are not typically allergenic but are not publicly itemized in product disclosures.
The full breakdown
What it's made of and why it matters
The Fitbit Air Active Band is constructed from elastomer material, most likely silicone or synthetic rubber formulated for comfort and durability during extended wear. Elastomers in wearables are generally stable and non-reactive against skin under normal use; they do not leach into sweat or body fluids at body temperature. The material's flexibility and water resistance come from the polymer chain structure itself, not from applied coatings, making degradation and coating flaking a low concern.
The brand's record and disclosure
Fitbit has maintained a transparent safety and compliance record across its wearables line, publishing material safety data sheets and working within FDA and CE marking frameworks for health devices. The brand has not issued public statements about PFAS use in bands, which is typical for silicone elastomers that rarely contain PFAS by default. No recalls or safety controversies specific to Fitbit wearable band chemistry have been established in public records; the company's parent (Google) endorses responsible manufacturing but does not publicly commit to PFAS elimination across all product lines.
How it compares in its category
Silicone and synthetic rubber elastomer bands are the industry standard for fitness trackers because they resist sweat, chlorine, and salt water without special coatings. This product presents lower concern than fabric or leather bands prone to mold or dye transfer, and sits alongside other major brands' silicone options (Apple, Garmin, Samsung), while avoiding the added complexity of composite or treated fabrics that introduce formaldehyde or azo dyes.
If you buy it
Rinse the band with fresh water after swimming, sweating, or salt water exposure to remove salts and chlorine that can degrade elastomers over years. Avoid prolonged direct sunlight when not worn, as UV light can cause long-term stiffening or discoloration. Replace the band if cracks, peeling, or persistent odor develops, typically after 2-3 years of daily wear. Clean monthly with mild soap and water; do not use harsh solvents, bleach, or high heat sources.
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
- Fitbit 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.