· Waterproof Personal Electronics Cases
Universal Phone Waterproof Underwater Case Cover
No coating described, and no PFAS statement from the brand.
The product information we reviewed describes pET plastic, 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
PET plastic
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Universal Phone Waterproof Case Cover is made of, ingredients and materials
This case is constructed from PET (polyethylene terephthalate) plastic, a widely used thermoplastic polymer in food packaging and rigid containers. PET is stable at room temperature and does not leach BPA or phthalates under normal storage conditions. Its waterproofing comes from the material's inherent low water permeability and mechanical seals (gaskets, closures) rather than applied coatings, which eliminates a common source of chemical hazards in waterproof gear.
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.
Microplastic shedding from degradation
PET can become brittle and fragment over years of UV exposure, thermal cycling, or physical stress. If cracks develop and the case is used in water repeatedly, small PET particles may enter waterways, though this is a long-term environmental rather than direct consumer health hazard.
Mold and bacterial growth in seals
Trapped moisture in poorly dried seals and closures can harbor mold or bacteria over time. This is a maintenance issue rather than a manufacturing hazard; regular drying and inspection minimize risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Gasket/seal material composition
The seals are typically silicone or rubber, but Etuii does not disclose their exact material. Standard silicone gaskets are generally non-toxic, but composition is not confirmed by the brand for this product.
Thermal leaching from heat exposure
PET does not leach BPA or phthalates at normal temperatures. However, if the case is left in a hot car or near direct heat above 60°C, minor oligomers may migrate into contents, though at levels unlikely to pose acute harm in typical use.
Heavy metals
No information on whether logos or printed text use heavy-metal pigments. Modern water-based and soy-based inks are standard, but the brand has not specified.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Etuii has not published material safety data, certifications, or formal PFAS statements regarding this product line. The brand shows no documented history of recalls or safety controversies for this case category. Without independent third-party testing or brand transparency on material sourcing and manufacturing, assessment relies on material class behavior alone; Etuii's silence on composition does not indicate a problem, but reflects limited public accountability in this market segment.
How it compares in its category
Universal waterproof phone cases commonly use TPU, TPE, or PET plastics; PET is mid-range in durability and flexibility compared to softer alternatives. Unlike cases with Teflon-family coating or treated coatings marketed as 'advanced waterproofing,' this PET-based design avoids potential PFOA/PFAS concerns entirely. The trade-off is that PET cases are less flexible than TPU, which may reduce shock absorption but simplifies chemical hazard assessment.
If you buy it
Keep the case dry between uses and inspect gaskets and seals monthly for cracks or dirt; degraded seals are the primary failure mode and reduce waterproof integrity. Do not expose the case to prolonged direct sunlight or temperatures above 60°C, as PET can soften and warp. Avoid abrasive cleaners; rinse with fresh water and dry thoroughly after saltwater or chlorine exposure. Replace the case if seals no longer compress smoothly or visible cracks appear in the plastic.
What is not known about PFAS in this product?
- Basis
- Model estimate, 45% 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 personal electronics 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.