Samsung · Waterproof Smartphone & Tech Cases
Ghostek Nautical S25 Waterproof Case with Belt Clip, Screen Protector and Camera Lens Cover Rugged Magnetic MagSafe Comp
Waterproof phone case, PFAS risk unverified. No brand disclosure available.
Ghostek waterproof phone cases use undisclosed waterproofing treatments typical in mobile accessories. No published PFAS testing or brand claims on composition available.
The safe swap
Tech21
Tech21 EvoClear for Apple iPhone 17 Pro
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/silicone case with waterproof treatment, screen protector, camera lens cover
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 is constructed from TPU (thermoplastic polyurethane) and silicone, common elastomeric materials chosen for drop protection and flexibility. The waterproof treatment applied to seal seams and edges is not publicly specified by Ghostek or Samsung, meaning the chemical basis of water resistance cannot be verified from available sources. TPU itself does not contain known acute toxins at normal use temperatures, but the waterproof coating formula remains a black box regarding PFAS or other water-repellent chemistry.
The brand's record and disclosure
Ghostek is a third-party accessory manufacturer without independent safety certifications or published material disclosures for this product line. Samsung does not provide material safety data sheets for accessories sold under partner brands. Neither Ghostek nor Samsung has made public commitments to PFAS-free formulations in phone cases, and no recalls or safety controversies specific to this model are on record. The silence on waterproof treatment chemistry is a transparency gap.
How it compares in its category
Rugged phone cases in this price tier typically rely on similar TPU or silicone bases, and waterproofing methods vary widely without industry standardization. Cases marketed as waterproof often use fluorochemical coatings to achieve water repellency, though not all do. This product does not appear to stand out positively or negatively in the category; most competitors offer similar material opacity and lack third-party certification.
If you buy it
Store in a cool, dry location away from direct heat sources, as TPU can soften above 60-70 degrees Celsius. Inspect seals periodically for wear, especially around the clip and openings, as waterproof integrity degrades with age and mechanical stress. Replace the case if seams separate or if the material becomes sticky or discolored, signs of polymer degradation. Avoid prolonged contact with solvents or oils that may degrade TPU.
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 chemistry (unspecified)
The waterproof treatment formula is not disclosed by manufacturer. Fluorochemicals or other water-repellent chemistry may be present but cannot be verified from public sources; this is the primary non-PFAS chemical concern for this product.
TPU degradation and leachables
TPU itself is not documented to leach harmful substances at normal use temperatures. No recalls or documented health issues linked to Ghostek TPU cases are on record, though long-term degradation products under extreme heat have not been independently tested for this specific product.
Microplastics from wear
As with all elastomeric phone cases, TPU and silicone shed microparticles during abrasion and aging. Shed particles are not ingested in normal use, but accumulate in the environment and on hands if the case is heavily scratched or crumbles.
Screen protector adhesive and materials
The included screen protector material is not specified. Generic tempered glass protectors carry no known hazards; adhesive formulations are not documented for this product, so contact dermatitis or VOC off-gassing risk cannot be assessed.
Magnetic component biocompatibility
MagSafe magnets in the case are typically ferrite or neodymium bonded with epoxy resin. No hazard is known for skin contact or pacemaker interference at normal distances, though sensitive devices should avoid direct contact.
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 & Tech Cases
Tech21
EvoClear for Apple iPhone 17 Pro
polycarbonate and thermoplastic polyurethane (TPU)
Polycarbonate phone case.
⚠Brand says nothing about PFAS
Apple
TechWoven MagSafe Case for iPhone 17 Pro
Woven fabric composite with elastomer MagSafe attachment
Limited PFAS risk from material choice, but no brand disclosure
⚠Brand says nothing about PFAS
Apple
iPhone 17 Pro Max TechWoven Case with MagSafe
Woven textile blend with MagSafe metal ring
Lower concern; typical smartphone case materials lack PFAS triggers.
⚠Brand says nothing about PFAS
More waterproof smartphone & tech 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.