Tech21 · Waterproof Smartphone & Tech Cases
Tech21 FlexQuartz MagSafe Case for iPhone 17 Pro
Unknown coating on TPU. Tech21 provides no PFAS disclosure.
Tech21 FlexQuartz cases use TPU elastomer with an unspecified protective coating. No public PFAS information from the brand. Limited transparency on materials.
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
Thermoplastic polyurethane (TPU) blend, unspecified coating
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 cases use thermoplastic polyurethane (TPU), a flexible synthetic polymer chosen for shock absorption and durability in phone protection. The case includes an unspecified coating (likely for grip, gloss finish, or water resistance), which is the critical unknown: TPU itself is relatively stable, but coatings can leach additives or contain hidden PFAS without disclosure. The MagSafe integration involves embedded metal components that do not present leaching risk but may corrode if the TPU barrier degrades over time.
The brand's record and disclosure
Tech21 is owned by Otter Products and has no published PFAS policy, sustainability statement, or material safety disclosures on their website or product literature. The company does not list chemical certifications (e.g., UL, NSF, or third-party material testing) for their TPU formulations. No major recalls or contamination incidents have been publicly documented for Tech21 cases, but their silence on coating composition and PFAS status is a transparency gap that makes independent assessment impossible.
How it compares in its category
Phone cases occupy a gray zone in consumer regulation: they are not food contact, so FDA or EU plastic migration rules do not apply, and CPSC oversight is limited. Tech21 sits mid-market in the protective case category; premium brands (e.g., OtterBox, Spigen) similarly provide minimal chemical disclosure, while eco-focused alternatives (e.g., Pela, Pela Case) emphasize material source and compostability but still do not always disclose all additives. TPU-based cases generally present lower leaching risk than soft silicone cases, which can off-gas volatile compounds, but the unidentified coating is a wild card.
If you buy it
Wash the case with mild soap and water before prolonged contact with skin, especially if you have sensitive skin, to remove any surface residue from manufacturing. Avoid prolonged exposure to direct heat (over 60°C / 140°F) or UV light, as TPU can soften and coatings may degrade, potentially releasing additives. Do not store in sealed bags or hot cars for extended periods; allow air circulation. Replace the case every 2-3 years or sooner if the coating visibly cracks, peels, or discolors, as a compromised barrier increases leaching risk.
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.”
Coating composition and leachables (unknown)
Tech21 does not disclose the identity or composition of the case coating. Unidentified polyurethane or acrylic coatings may contain plasticizers, antimicrobial agents, or water-repellent additives that could leach under skin contact or warm/humid conditions, though no incidents have been reported for this product line.
TPU base material degradation
Thermoplastic polyurethane is inherently prone to hydrolysis and UV degradation over 2-3 years of use, especially in warm or moist environments. Degradation of the TPU matrix can expose additives or compromise the barrier protecting skin from contact with underlying metal components and MagSafe hardware.
Heavy metals in MagSafe or metal components
Embedded magnets and metal ring attachments are not regulated as leachable materials in phone accessories and no data on Tech21's metal sourcing or testing is publicly available. Risk is presumed low if the TPU coating remains intact, but corrosion or wear could expose uncoated metal surfaces.
Skin irritation from surface finish or residues
Uncertified coatings or finish treatments applied during manufacturing may contain residual solvents, antimicrobial biocides, or slip agents that irritate sensitive skin on hands or face upon direct contact. No allergic reactions have been formally documented for Tech21 cases, but susceptible users should rinse the case before use.
Microplastic shedding from degraded coating
As the TPU case and coating age or flex repeatedly, small particles may break away and be ingested inadvertently (e.g., hand to mouth contact). The risk is low for a phone case vs. other plastic goods, but degraded cases should be replaced to minimize exposure.
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.