GoPro · Waterproof Camera & Lens Protection Cases
GoPro Hero 3+ 4 Underwater Lens Filter Kit
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes optical glass lens, plastic/polymer frame, 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, plastic/polymer frame
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.
Polymer frame degradation over time
Plastic frames can become brittle or lose dimensional stability after 3-5 years of UV and thermal cycling, reducing waterproof seal reliability. Regular inspection is advised.
Seal integrity and bacterial/mold growth
If gaskets are not dried after underwater use, trapped moisture can promote mold in the sealed cavity. Dry thoroughly and store loosely in low-humidity conditions.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
VOC off-gassing from polymer
No reports of odor or off-gassing from GoPro polymer frames. Optical glass itself is not a VOC source.
Heavy metals
Optical glass may contain trace lead or barium as flux agents (industry standard), but this is sealed within the matrix and does not leach under normal use or water contact.
Source, FDA ↗Scratching or abrasion of optical surface
Glass is durable but not a chemical safety hazard. Poor care (dry wiping, sand particles) causes optical degradation, not toxicological risk.
The full breakdown
What it's made of and why it matters
This kit consists of optical glass lens elements mounted in a plastic/polymer frame. Optical glass is chemically inert and does not leach into food or skin contact; the frame polymer is non-functional (protective only, not in direct contact with camera internals or skin for prolonged periods). Neither material class presents lead, cadmium, or phthalate risks at normal use. The sealing integrity depends on frame fit and gasket design, not surface coatings.
The brand's record and disclosure
GoPro does not publish PFAS statements or restricted substance certifications for camera accessories. However, the brand has no known recalls or safety controversies tied to lens filters or polymer housings. GoPro's primary focus is durability and waterproofing; accessory transparency is limited but not a red flag in this product class.
How it compares in its category
Optical glass lens filters have lower concern than plastic-only alternatives, which can degrade or cloud over time. GoPro-brand accessories are typically engineered to tight tolerances, reducing risk of frame degradation or seal failure. Third-party filters often use lower-grade glass or acetate frames, which carry higher VOC off-gassing and yellowing risks.
If you buy it
Avoid prolonged exposure to temperatures above 60C (140F), which can soften polymer frame components and compromise seals. Inspect gaskets annually for cracks or compression loss, especially if stored in direct sunlight. Clean glass with microfiber cloth only; avoid harsh solvents. Replace the filter if the polymer frame becomes warped, as this can allow water ingress.
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
- GoPro 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.