GoPro · Waterproof Camera & Lens Protection
GoPro Hero 3+ 4 Underwater Lens Filter Kit
Unknown waterproof coating composition. Low public transparency on PFAS.
GoPro does not publicly disclose PFAS use in this lens filter kit. Underwater camera optics typically use waterproof coatings that may contain Teflon-family coating, but brand provides no specification.
The safe swap
Sigma
Sigma WR UV Filter
100/100 safety
Same rubric that flunked this product. The swap earned its A.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Optical glass lens, plastic/polymer frame, waterproof coating/lens treatment unspecified
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
This kit comprises optical glass lens elements mounted in polymer (likely polycarbonate or acrylic) frames with an unspecified waterproof or anti-reflective coating. Optical glass itself is inert and does not leach; however, the coating composition on the glass surfaces and any adhesives binding the frame are not publicly documented by GoPro. The polymer frame is stable under normal use but can degrade if exposed to solvents or sustained UV.
The brand's record and disclosure
GoPro has not published detailed material safety data or ingredient transparency for camera accessories. The company does not advertise third-party certifications (RoHS, REACH compliance statements) for lens filter kits. No recalls or safety incidents specific to this lens filter kit are on record. GoPro's silence on waterproof coating chemistry aligns with broader industry practice for camera optics, but limits verification of chemical safety.
How it compares in its category
Optical glass filters are considered lower-risk than plastic-only alternatives because glass is chemically inert. However, most aftermarket camera filter manufacturers similarly do not disclose coating formulations. This GoPro-branded kit is positioned as premium but offers no transparency advantage over comparable third-party optical filters. The undisclosed coating is the main differentiator risk in this product class.
If you buy it
Store filters dry in a protective case away from direct sunlight to prevent UV degradation of the polymer frame. Do not immerse the frame assembly itself; only the glass element is waterproof-safe. Inspect the coating annually for cloudiness, pitting, or peeling, which signals degradation; replace if visible damage occurs. Avoid abrasive or solvent-based cleaners on the coating; use lens tissue and distilled water only.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Waterproof coating composition (unspecified)
GoPro does not disclose whether the coating contains fluorinated compounds, siloxanes, or other persistent chemicals. Without transparency, potential for undisclosed PFAS or other hazardous additives cannot be ruled out, though optical coatings are typically applied in minimal quantities.
Polymer frame degradation
Polycarbonate or acrylic frames can yellow, become brittle, or develop stress cracks over 3-5 years under UV exposure or thermal cycling. This does not pose direct health risk but may compromise waterproof seal integrity and lens clarity.
Adhesive leachables (frame-to-glass bond)
No public data on adhesive formulation used to bond optical glass to polymer frame. In normal dry use, this poses negligible risk; however, if frames are misused in prolonged water submersion, adhesive could theoretically leach into water, though no incidents are documented.
Optical coating off-gassing
Anti-reflective and hydrophobic coatings on optical glass typically cure before sale and do not off-gas under normal use. GoPro provides no information to confirm cure status or coating type; off-gassing risk is low but not independently verified.
Heavy metal pigments in lens treatment
No public record of GoPro using lead, cadmium, or other heavy metals in optical coatings for this product. Optical glass and standard anti-reflective coatings do not typically employ these; risk is theoretical only.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 45% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Waterproof Camera & Lens Protection
Sigma
WR UV Filter
UV-absorbing optical glass or mineral coating
Lower concern optical filter; no known PFAS-prone components identified.
✓Naturally PFAS-free material
GoPro
HB-Series Lens Collection for HERO13 Black
Glass and optical lens elements
Lower concern. Glass lenses pose minimal PFAS risk typically.
⚠Brand says nothing about PFAS
GoPro
K&F Concept 4-in-1 Filter Kit for GoPro HERO9/10/11
Glass optical filters, metal frames, rubber gaskets
Lower concern. Optical glass filters unlikely to contain PFAS.
⚠Brand says nothing about PFAS
More waterproof camera & lens protection 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.