Ghostek · Waterproof Smartphone Cases
Ghostek Nautical Slim Waterproof Case for Google Pixel 9 Pro
Waterproof phone case; waterproof coating composition undisclosed by brand.
Ghostek's waterproof cases use unknown coating materials to achieve water resistance. Brand does not disclose PFAS content or composition details.
The safe swap
Mophie
Mophie Juice Pack Battery Case for iPhone 15
85/100 safety
Same rubric that flunked this product. The swap earned its B.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
TPU/polycarbonate with waterproof coating
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 case combines TPU (thermoplastic urethane) and polycarbonate as the structural shell, both well-established polymers with low leaching risk under normal phone-use temperatures. The waterproof coating is the critical unknown: waterproofing in mobile cases typically requires either fluorinated compounds (potential PFAS) or silicone-based sealants. Ghostek has not publicly disclosed which, leaving the coating chemistry opaque. Neither TPU nor polycarbonate releases harmful volatiles at room temperature or typical skin contact.
The brand's record and disclosure
Ghostek maintains a product-focused web presence but has not published material safety data sheets, chemical disclosures, or PFAS statements for this case line. The brand has no documented history of safety certifications (e.g., SGS, third-party polymer testing) for this category. No recalls or safety complaints are on record for Ghostek phone cases. The silent stance on waterproof coating chemistry is typical of the accessory market but represents a disclosure gap for consumers seeking certainty on PFAS or fluorinated additives.
How it compares in its category
Waterproof phone cases broadly fall into two camps: silicone-sealed designs (generally PFAS-free but less durable) and fluorinated-coating versions (more durable but PFAS-risk if fluorine-based). Ghostek Nautical positions as a slim, armor-style case, suggesting a harder shell with coating rather than thick silicone. This is mid-market for the category; premium brands like OtterBox and Spigen offer similar designs but with equally opaque waterproof coating disclosures. Generic TPU cases avoid coatings entirely but sacrifice waterproofing.
If you buy it
Store and use at room temperature; TPU and polycarbonate are stable below 60°C and safe in direct sunlight. Avoid prolonged immersion beyond the rated depth/time to prevent water ingress at seals. Inspect the case every 6-12 months for cracks, crazing, or seal degradation, especially around corners and the camera cutout, as these are first-failure points. Clean with lukewarm water and mild soap; avoid harsh solvents or heat guns. If waterproofing performance declines, replacement is the only remedy.
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.”
Fluorinated compounds (PFAS/PFCs) in waterproof coating
Ghostek has not disclosed the coating chemistry. Waterproofing in thin phone cases commonly uses fluorinated polymers or silicone; fluorinated options carry PFAS risk. Without transparency, this cannot be ruled out.
Polycarbonate leaching (BPA analog risk)
Polycarbonate shells in phone cases are not heated or food-contacting, so BPA leaching is not a documented concern. Modern polycarbonate in accessories is formulated to minimize any release.
TPU off-gassing or degradation
TPU is chemically stable at normal temperatures and does not off-gas volatile organic compounds during typical use. Degradation over years may occur under UV or extreme heat, but this is a mechanical failure, not a chemical safety issue.
Microplastic fragmentation from case wear
Over time, TPU and polycarbonate cases can degrade at edges and corners, shedding microparticles. This is a durability issue more than acute toxicity, but fragments entering waterways or landfill is a lifecycle concern.
Adhesive leachables in seam bonding
Waterproof seals often use polyurethane or epoxy adhesives to bond shell layers. Harsh solvents or prolonged submersion could theoretically mobilize adhesive residues, though risk is low in normal use.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% 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 Smartphone Cases
Mophie
Juice Pack Battery Case for iPhone 15
Lithium-ion battery, plastic housing, metal contacts
No known PFAS use; battery cases rarely require fluorinated coatings.
⚠Brand says nothing about PFAS
Mophie
Juice Pack Battery Case for iPhone 15 Pro
Lithium-ion battery, plastic housing, rubber grips
Lower concern. Battery cases lack typical PFAS-prone coatings; no public disclosure available.
⚠Brand says nothing about PFAS
Pelican
Shield Phone Case for Samsung Galaxy S24 Plus
Polycarbonate shell, rubber grip
Lower concern; typical phone case with no known PFAS applications.
⚠Brand says nothing about PFAS
More waterproof smartphone 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.