Tech21 · Waterproof Smartphone & Tech Cases
Tech21 FlexQuartz MagSafe Compatible Case
Unknown coatings on phone case; brand silent on PFAS.
Tech21 cases typically use TPU and proprietary protective coatings without PFAS disclosure. No third-party verification available. Direct contact with brand recommended for coating details.
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) with unspecified protective coatings
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 are thermoplastic polyurethane (TPU), a flexible synthetic polymer chosen for shock absorption and grip. TPU itself is non-toxic under normal use, but the 'unspecified protective coatings' mentioned in your context are the real concern: these could include water-resistant or antimicrobial treatments that are not disclosed to consumers. Without knowing what coating is present, it's impossible to rule out problematic additives like PFAS, phthalates, or other chemical treatments.
The brand's record and disclosure
Tech21 is a major phone-case manufacturer owned by Otter Products. The company provides no publicly available transparency documents, safety data sheets, or material disclosures specific to PFAS, phthalates, or coatings used on this product. No major recalls or chemical safety incidents are on record for Tech21 cases, but their silence on coating composition is a genuine gap. This is typical for the phone-case industry, where competitive secrecy often outweighs consumer transparency.
How it compares in its category
Most mainstream TPU phone cases (OtterBox, Spigen, Casetify) use similar materials and similarly vague coating disclosures. Some premium brands now publish PFAS-free certifications; Tech21 does not. TPU is generally safer than rigid plastics for contact with skin because it does not leach BPA or BPS under normal conditions, but the coatings are the wild card. This product sits in the middle of the transparency spectrum: neither worst-case nor leader-class.
If you buy it
Keep the case away from heat sources (direct sunlight, car dashboards in summer, dishwashers) because TPU can soften and degrade at temperatures above 60-70°C, potentially releasing coating components. Wash it with mild soap and cool water; avoid alcohol or harsh solvents that can strip coatings. Replace it if you notice discoloration, tackiness, or visible damage to the surface coating. Store in a cool, dry place when not in use.
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.”
Unspecified protective coatings (unknown chemical composition)
Tech21 does not disclose the identity or composition of surface treatments on this case. Coatings could contain PFAS, antimicrobial additives (silver nanoparticles, triclosan analogs), or other chemicals not listed on packaging. Skin contact over extended periods (daily case handling) means any leachable component poses low but non-zero exposure risk.
TPU degradation under heat or UV exposure
TPU cases are known to yellow, become sticky, or harden excessively when exposed to sunlight or elevated temperatures over months to years. As the polymer matrix degrades, any coatings or additives embedded in it may become more bioavailable. This is a cosmetic and functional issue first, but chemical integrity is compromised.
Microplastic shedding from worn surfaces
As TPU cases flex and wear, microscopic particles can slough off, especially if coatings are compromised. Users may ingest these particles through hand-to-mouth contact. The frequency and mass of shedding from phone cases specifically is not well quantified, but normal wear over 1-2 years is expected.
Phthalates in TPU formulation
Quality TPU is phthalate-free, but cheaper TPU or TPU blends can contain phthalate plasticizers. Tech21 does not confirm either way. No recalls or testing data on this specific case are public, so no confirmed hazard exists, but the risk cannot be ruled out.
Contact allergens in coatings or colorants
Unidentified coatings may contain allergens like formaldehyde releasers, antimicrobial agents (triclosan derivatives), or UV absorbers. Users with sensitive skin or known contact dermatitis may experience reactions from daily case contact; this is rare but not impossible given the coating mystery.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 42% 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.