· Waterproof Camera & Lens Protection Cases
Colour Lens Waterproof Case Filter for Osmo Action 5 Pro / Osmo Action 4 / Osmo Action 3
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes optical glass lens, 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
Optical glass lens
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.
Coating degradation and leachables from anti-reflective or protective surface treatments
Color-tinted optical glass may have anti-reflective or UV-resistant coatings applied to the surface. Product documentation does not specify coating chemistry. If coatings degrade after prolonged saltwater exposure, trace leachables are theoretically possible but unlikely to enter food or skin contact given the application context.
Bacterial growth in waterproof seals or dead-end cavities
If the filter housing traps moisture in gasket recesses and is not regularly dried, slow microbial growth is possible. This is a maintenance issue rather than a material hazard; regular rinsing and air-drying mitigates risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Lead
Optical-grade glass for camera filters uses stable mineral pigments (iron oxides, titanium dioxide) rather than legacy lead-cadmium colorants. No recalls or test reports document heavy metal contamination in 3M optical lens filters.
Source, ATSDR ↗Microplastic shedding from polymer housing
This product is optical glass with no plastic components listed in contact with the lens or filtrate. Waterproof seals are mechanical (rubber gaskets), not plastic films prone to degradation.
Volatile organic compound off-gassing
Glass does not off-gas VOCs. Any rubber or adhesive in the seal assembly is minimal, not in contact with skin or food, and not heated, so no formaldehyde or phthalate release is expected under normal camera use.
The full breakdown
What it's made of and why it matters
This product is an optical glass lens filter designed to protect camera lenses during water exposure. Optical glass is chemically inert borosilicate or soda-lime glass formulated for optical clarity and durability, with no volatile organics or leachable heavy metals under normal use. The waterproof seal comes from the rigid glass design and mechanical fit, not fluorinated coatings or adhesives. Color tints in optical glass are achieved through stable mineral pigments (iron oxides, titanium dioxide) fused into the glass matrix during manufacturing, which do not leach or degrade with light or moisture exposure.
The brand's record and disclosure
3M has made no public statements regarding PFAS use in this specific lens filter product, and no PFAS-containing coatings are described in available product documentation. 3M is known for extensive PFAS use in water-repellent films and protective coatings across other product lines, but that history does not extend to rigid optical glass filters. The company has faced historical litigation over PFAS contamination in other categories but maintains no established safety certification or independent third-party testing claims for this camera accessory line.
How it compares in its category
Optical glass lens filters are among the lowest-risk protective accessories in the camera protection category because glass is a stable, non-leaching material with no polymer breakdown pathway. Competitors using plastic or resin housings may introduce BPA or phthalate leachables if heated or exposed to prolonged sunlight; this product avoids that entirely. The main trade-off is durability under impact, glass can shatter, whereas polycarbonate alternatives are impact-resistant, but neither poses chemical hazards during normal water or light exposure.
If you buy it
Rinse the glass lens with fresh water after saltwater exposure to prevent mineral buildup and microscopic pitting over time; avoid harsh solvents or abrasive cloths that can scratch coatings. Store dry and away from extreme temperature swings, which can cause stress fractures in glass. If the lens cracks or chips, replace it immediately to restore waterproof integrity of the camera system. No special disposal precautions are needed; optical glass is fully recyclable as standard glass 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
- has made none
Formulations change between production runs, so check the current label. How we grade.
More waterproof camera & lens protection 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.