Tech21 · Waterproof Smartphone & Tech Cases
Tech21 FlexQuartz MagSafe Case for iPhone 17
No PFAS disclosure; unknown polymer coating raises uncertainty.
Tech21 does not disclose PFAS status or coating composition for this case. Polymer blends and proprietary treatments sometimes contain PFAS; contact brand for clarity before purchase.
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
Proprietary polymer blend, coating unspecified
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Unknown / proprietary coating
Proprietary coating with no disclosed chemistry.
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
Tech21 FlexQuartz uses a proprietary polymer blend designed for shock absorption and grip. The specific polymer composition and any protective coatings are not publicly disclosed, making independent hazard assessment difficult. Proprietary formulations in phone cases typically include thermoplastic polyurethane (TPU), polycarbonate, or hybrid blends, but Tech21 does not specify which. The undisclosed coating is the main point of concern, as case coatings can include substances that leach into skin or food contact if design fails.
The brand's record and disclosure
Tech21 has not published material safety data sheets (MSDS), chemical composition details, or formal PFAS commitment for this product line. The company has a long history in protective phone accessories with no major public recalls for chemical hazards, but this does not substitute for transparency. Their silence on polymer sourcing and coatings is consistent with industry norms but leaves end-users without verifiable information on restricted substances. No independent third-party certifications (e.g., Cradle to Cradle, GreenGuard) are advertised for this case.
How it compares in its category
Phone cases are low-regulation products in most jurisdictions; material disclosure is rarely mandated. Tech21's opacity on coatings is typical of the market, though premium competitors (e.g., some Spigen or Apple-designed cases) increasingly publish polymer and coating details. Cases made from known materials like transparent TPU or certified polycarbonate allow easier hazard screening. The FlexQuartz's proprietary formula puts it in the middle-opaque tier: not the most transparent, but also not aggressively hidden like some unbranded alternatives.
If you buy it
Avoid prolonged skin contact in hot, sweaty environments, as polymer coatings can degrade and microparticles may transfer to hands or face. Do not expose to direct sunlight, extreme heat (above 60C/140F), or solvents (alcohol-based sanitizers); these can accelerate coating breakdown or leaching. Replace the case if you notice visible flaking, discoloration, or odor (sign of polymer degradation). Wash hands after extended use and do not chew or mouth the edges; children should be supervised to prevent ingestion of microparticles.
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.”
Polymer coating leaching
Undisclosed coating composition means potential for migration of monomers or additives into skin or food if the case touches mouth, food, or is used as a stand for eating. No test data available; risk is speculative but non-zero given polymer chemistry.
Microplastic shedding from degradation
Proprietary polymer blends can fragment under stress, temperature cycling, or UV exposure. If microparticles are inhaled or ingested via hand-to-mouth transfer, systemic effects remain under study. Tech21 does not specify durability or degradation pathways.
Volatile organic compound (VOC) off-gassing
No complaints or recalls reported for FlexQuartz off-gassing. Proprietary polymers may emit trace VOCs when new; ventilation is standard practice, and cases do not typically off-gas at hazardous levels after initial cure.
Heavy metal or antimony in polymer additives
No test results or recalls document heavy metals in Tech21 cases. Industry baseline testing suggests phone cases rarely exceed antimony or lead limits, but disclosure absence means this cannot be verified for this specific product.
Allergic contact dermatitis from polymer or coating
Proprietary blends may include unadvertised accelerators, plasticizers, or colorants that trigger contact sensitivity in susceptible users. Individual case reports are rare but not ruled out; users with polymer sensitivity should request material data or test a sample first.
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.