Onn Waterproof Phone Pouch, Clear Compatible with iPhone, Samsung, Google, and Huawei with screens up to 7
Skip. Waterproof pouch coating source and PFAS content unknown.
Waterproof phone pouches often use PFAS-based water-repellent coating treatments. Onn and parent Sony disclose nothing about coating chemistry or PFAS avoidance. Material composition unclear.
The safe swap
Blackview
Blackview C03 Leather Protective Case with Shoulder Strap For Active 7/Active 10 Pro
85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
PVC or TPU with unspecified waterproof coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
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.
Phthalate leaching (PVC only)
If this pouch is PVC rather than TPU, it likely contains phthalate plasticizers to achieve flexibility; prolonged skin contact or exposure to oils can cause slow migration onto hands or phones. Risk is low for occasional use but increases with frequent handling in warm conditions.
Waterproof coating composition unknown
The waterproof seal coating is not specified as PFOA/PFOS-free or otherwise characterized; unknown risk of fluorinated or other synthetic polymer sealants that can degrade over time and shed microplastics or leachates.
Microplastic shedding with wear
As the pouch ages and surface coatings crack or flake, small plastic particles may be released, especially when the pouch is flexed or folded repeatedly. This is a concern only if particles come into contact with food or are ingested.
Degradation under UV and heat exposure
Uncoated or poorly formulated PVC/TPU degrades when exposed to prolonged sunlight or high temperatures, becoming brittle and potentially releasing additives. Keep the pouch out of direct sun and away from heat sources to extend safe use life.
What’s reassuring
Volatile organic compound off-gassing
No specific off-gassing complaints recorded for this pouch model, but budget PVC and TPU products may emit low-level odors (often described as plastic smell) for the first few weeks; ventilate if odor is noticeable.
The full breakdown
What it's made of and why it matters
This pouch is constructed from either PVC (polyvinyl chloride) or TPU (thermoplastic polyurethane), with an unspecified waterproof coating applied to seal seams and surfaces. PVC is a known leacher of phthalates and other additives when in contact with oils or prolonged moisture, while TPU is generally more chemically stable but still requires additives for waterproofing. The waterproof coating composition is not disclosed by the manufacturer, which is the primary safety concern since waterproofing in budget pouches often relies on fluorinated chemicals (PFAS) or other polymeric sealants whose long-term migration into skin or food is not well characterized.
The brand's record and disclosure
Onn is Walmart's house brand for electronics accessories and does not maintain public disclosure on material sourcing, chemical content, or testing certifications for non-electronic components like phone pouches. No formal recalls or safety incidents specific to Onn pouches have been widely reported, but the brand does not publish Material Safety Data Sheets or third-party certifications for pouches. Sony does not own or manufacture Onn products; this appears to be a product listing error or the pouch is sold under Onn branding exclusively.
How it compares in its category
Budget waterproof pouches in this price tier typically use unregulated PVC or TPU with proprietary coatings; few competitors disclose PFAS testing or avoidance. Premium alternatives (e.g., some outdoor brands) use certified TPU or silicone with published material specs, though at 2-4x the cost. This pouch's main advantage is price and compatibility range; the trade-off is opacity about waterproofing chemistry and no third-party verification.
If you buy it
Store the pouch in a cool, dry location away from direct sunlight to minimize plastic degradation and additive migration. Avoid prolonged contact with skin oils, lotions, or food; wash hands after handling if used frequently. Do not expose to heat sources or store in a hot car, as this can accelerate leaching from both the base material and the coating. Replace the pouch if visible cracks, cloudiness, or sticky residue (signs of breakdown) appear, typically within 1-2 years of regular use.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Sony has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Waterproof Phone Cases
Blackview
C03 Leather Protective Case with Shoulder Strap For Active 7/Active 10 Pro
leather (primary material), shoulder strap
Lead
Limited concern
Synthetic dyes and colorants in leather and strap fabric
Limited concern
Volatile organic compounds (VOCs) from tanning and finishing
Moderate concern
Formaldehyde / VOCs
Limited concern
Lower concern. Leather cases rarely treated with PFAS.
⚠Brand says nothing about PFAS
Griffin
Survivor Case with Belt Clip for Apple iPhone 4/4S GB01902
Polycarbonate, silicone, TPE
Volatile organic compound (VOC) off-gassing
Limited concern
Lower concern phone case.
⚠Brand says nothing about PFAS
Griffin
Survivor Strong for iPhone 11 Pro GIP-023
TPU, polycarbonate, recycled plastic
Heavy metals
Limited concern
VOC off-gassing (polycarbonate/TPU)
Limited concern
Phone case materials lower concern.
⚠Brand says nothing about PFAS
More waterproof phone 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.