Withings · Water-Resistant Smart Rings & Bands
Compatible For Withings Smartwatch Bands, Lamshaw 18mm Size Band, Gray
Low risk. Silicone band likely lower PFAS concern.
Lamshaw silicone smartwatch bands are generally lower PFAS risk materials. No brand disclosure or third-party testing located.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Silicone watch 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.
Volatile organic compounds (VOCs) from manufacturing residues
Silicone manufacturing can leave trace volatile residues; these typically off-gas within the first few days of use and are not hazardous at the levels found in consumer watch bands. No test data for this specific product is publicly available.
Microbial growth and biofilm if band is not cleaned
Silicone's porous microstructure can harbor bacteria and fungi if the band remains damp or is worn without regular cleaning. This is a maintenance issue, not a manufacturing defect, and affects all silicone wearables equally.
Coating or finish degradation over extended use
Lower-cost silicone bands may have a thin gloss or UV-resistant coating that can peel or degrade within 1-2 years of regular wear. This is cosmetic and does not pose a safety hazard, though it may affect comfort and appearance.
Skin irritation from tight fit or sweat accumulation
Watch bands worn continuously can trap moisture and create a humid microclimate, leading to mild irritation in sensitive individuals. This is not specific to silicone and is mitigated by regular cleaning and occasional removal.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Contact dermatitis from colorants or processing aids
Gray pigmentation in silicone bands typically uses inorganic compounds (carbon black, iron oxides) that do not commonly trigger dermal reactions. No reported incidents linked to Withings or Lamshaw bands are on record, and silicone itself is hypoallergenic.
The full breakdown
What it's made of and why it matters
This is a silicone elastomer watch band, the most common and chemically inert material for wearable straps. Silicone's high molecular weight and cross-linked structure mean it does not readily leach compounds into skin contact under normal wear conditions. The 18mm size indicates it is designed for small Withings watch models. Gray color pigmentation is typically achieved with carbon black or inorganic oxides, not heavy-metal azo dyes, which keeps dermal contact risk minimal.
The brand's record and disclosure
Withings is a subsidiary of Nokia Health and a recognized digital health brand, though not known for transparency on material safety certifications or chemical disclosure. No recalls or safety complaints specific to Withings watch bands are on public record. The company does not publish restricted substance lists or third-party test results for band materials. This silence on PFAS and other additives is typical for small accessory manufacturers but limits independent verification.
How it compares in its category
Silicone watch bands occupy the middle ground for safety, they are non-toxic when compared to vinyl or PVC alternatives (which can contain phthalates), but offer fewer durability and sustainability claims than premium elastomers or leather. Most silicone bands in this price tier are not certified to migration standards (like EN 71-3 for toy materials), though they rarely exceed acceptable thresholds for brief wearable contact. This Lamshaw product is a third-party compatible strap, so quality control is secondary to OEM band specifications.
If you buy it
Silicone bands have no hazard of this kind on record for skin contact but can accumulate sweat, dirt, and bacteria in crevices; wash regularly with mild soap and water, especially if worn continuously. Avoid exposure to oils, perfumes, and harsh solvents, which can degrade the surface over time. Inspect periodically for visible cracking, discoloration, or a sticky feel, which signals degradation; replace if these occur. Do not expose the band to prolonged direct sunlight or heat above 60°C (140°F), as silicone can harden or discolor with age.
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
- Withings 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.