Do Coros water-resistant smart rings & bands have PFAS?
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
Aqua Pure
3M Aqua-Pure AP802B Whole House Filter Housing
- 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. See all of them.
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. See all of them.
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. See all of them.
Coros water-resistant smart rings & bands average 70 out of 100 on PFAS Authority's PFAS and toxin screen across the 6 Coros water-resistant smart rings & bands graded as of October 2026, below the 85 out of 100 median for the 11 other water-resistant smart rings & bands brands graded alongside it.
Coros water-resistant smart rings & bands average Good on our four-band scale. 4 of the 6 we graded are worth buying.
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.
Coros water-resistant smart rings & bands worth buying Good or better, best-graded first
Coros
Apex Silicone Breathable Pin & Tuck
- silicone, breathable pin and tuck construction
- We found no PFAS statement from the brand
- Silicone thermal degradation and leachates, While food-grade silicone is well-studied for safety…
Coros
FKM Rubber Watch Band
- FKM (Viton) rubber elastomer
- We found no PFAS statement from the brand
- Azo dyes (synthetic colorants), If the Coros FKM band is dyed (e.g., black, colored variants), synthetic azo…
Coros
Silicone Watch Band - Unisex Replacement Strap For Smartwatch teal-blue / 22mm
- Silicone elastomer strap
- We found no PFAS statement from the brand
- Bacterial or fungal growth, Silicone is non-porous and naturally antimicrobial, but sweat and dead skin cells…
Coros
Silicone Watch Band For COROS Smartwatch Unisex Waterproof Strap Light Green / 20mm
- Silicone elastomer
- We found no PFAS statement from the brand
- PFAS, Light green pigmentation is typical in silicone bands. Standard iron oxides or organic pigments used in…
2 hazards checked on this product. See all of them.
Graded and flagged Poor and Bad, we’d swap these
Coros
Nylon Sailcloth Watch Bands Quick Release Strap Waterproof Sport
- Nylon with unspecified waterproof coating
- We found no PFAS statement from the brand
- water-repellent coating (water-repellent coating) / Waterproof Coating Chemistry, Standard textile…
4 hazards checked on this product. See all of them.
Find an alternative on Amazon
Coros
Smartwatch Bands Nylon Quick Release Waterproof Strap
- Nylon with waterproof treatment, coating unspecified
- We found no PFAS statement from the brand
- PFAS, Nylon waterproof treatments often rely on C8 or C6 Teflon-family coating; Coros does not disclose which…
3 hazards checked on this product. See all of them.
Find an alternative on AmazonBetter water-resistant smart rings & bands from other brands
Graded higher than the Coros average of 70.
Even Realities
Even R1 Smart Ring
- titanium, stainless steel, sapphire crystal
- We found no PFAS statement from the brand
- Band material variability
2 hazards checked on this product. See all of them.
Smart Ring 3 Silver / 9#19.1mm / Standard with 1 Charging Case
- Titanium alloy, sapphire crystal, stainless steel
- We found no PFAS statement from the brand
- Nickel leaching (from stainless steel components)
3 hazards checked on this product. See all of them.
Smart Ring Titan Rose Golden / 11#20.6mm
- Titanium alloy body with ceramic crown
- We found no PFAS statement from the brand
- Nickel leaching from alloy components
2 hazards checked on this product. See all of them.
The same question, asked of the other water-resistant smart rings & bands brands
Best average grade first. Coros averages 70.
See every Coros product we grade on the Coros brand page, or the full water-resistant smart rings & bands ranking.