Do Withings waterproof smartphone cases have PFAS?
Withings waterproof smartphone cases average 85 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Withings waterproof smartphone cases graded as of November 2026, level with the 85 out of 100 median for the 11 other waterproof smartphone cases brands graded alongside it.
Withings waterproof smartphone cases average Excellent on our four-band scale. 8 of the 8 we graded are worth buying. That is above 55% of the waterproof smartphone cases brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
Withings waterproof smartphone cases worth buying Good or better, best-graded first
- Stainless steel case, possibly water-resistant polymer gaskets
- We found no PFAS statement from the brand
- BPA & bisphenols. Water-resistant gaskets are typically synthetic rubber or elastomer, materials that can…
4 hazards checked on this product, all on its full breakdown.
- Plastic casing, elastomer band
- We found no PFAS statement from the brand
- Elastomer band degradation and skin irritation. Elastomer materials can degrade with sweat, UV exposure, and…
2 hazards checked on this product, all on its full breakdown.
- stainless steel, sapphire crystal, elastomer band
- We found no PFAS statement from the brand
- Elastomer band degradation and additive leaching. Elastomer bands commonly contain plasticizers (phthalates…
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Rubber/elastomer wristband
- We found no PFAS statement from the brand
- Colorants and dyes in elastomer. Black rubber wristbands can contain carbon black or synthetic dyes; no test…
5 hazards checked on this product, all on its full breakdown.
- Stainless steel case, sapphire crystal, elastomer bands with water resistance
- We found no PFAS statement from the brand
- water-repellent coating (water-repellent coating) treatment chemistry. Water resistance is likely achieved…
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Stainless steel case, polymer straps, electronic components
- We found no PFAS statement from the brand
- Polymer strap degradation and skin contact. Repeated sweat exposure and UV light can degrade elastomer straps…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel case, sapphire crystal, silicone/rubber strap
- We found no PFAS statement from the brand
- Nickel release from stainless steel case (contact dermatitis). Surgical-grade 316L stainless steel contains…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel case, elastomer/polymer band
- We found no PFAS statement from the brand
- Allergens in band material or finishes. Elastomer bands may contain residual mold release agents or…
The same question, asked of the other waterproof smartphone cases brands
Best average grade first. Withings averages 85.
See every Withings product we grade on the Withings brand page, or the full waterproof smartphone cases ranking.