Samsung · Waterproof Earbuds & Cases
Spigen Lock Fit Case for Galaxy Buds
Lower concern. Spigen earbud cases use standard TPU plastics without known PFAS treatments.
Spigen Galaxy Buds cases are typically TPU-based protective shells without water-resistant coatings or Teflon-family coating treatments. No public PFAS disclosures or concerns identified for this product category.
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Thermoplastic polyurethane (TPU) case, silicone elements
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
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
The Spigen Lock Fit Case uses thermoplastic polyurethane (TPU) as its primary material, a flexible synthetic polymer commonly chosen for phone and earbud cases because it absorbs shock and resists cracking. Silicone accent elements (typically buttons or reinforced edges) add durability and grip. Neither TPU nor silicone requires heating during normal use, which eliminates the risk of leaching or off-gassing that affects cookware or heavily heated plastics.
The brand's record and disclosure
Spigen is owned by Arizone Technology, a South Korean electronics accessories manufacturer with no major product safety recalls or disclosures related to earbud case materials on public record. The brand does not publish detailed material certifications or PFAS avoidance statements, which is typical for accessory makers but limits transparency. No formaldehyde, phthalate, or heavy-metal contamination has been reported for Spigen TPU cases in available sources.
How it compares in its category
Earbud cases occupy a low-hazard product class because they involve minimal skin contact, no food exposure, and no thermal stress. Spigen's TPU formulation is standard across the category; competitors like OtterBox and Casetify use similar or identical base materials. The main differentiation is manufacturing quality and durability rather than chemical safety profile, where this product falls within typical industry norms.
If you buy it
Store the case at room temperature and avoid prolonged direct sunlight, which can degrade TPU over years and potentially cause surface cracking. Do not expose it to heat sources, solvents, or extreme cold. If the exterior becomes sticky or tacky (signs of plasticizer migration), discontinue use. Silicone buttons may eventually stiffen or discolor with age, but replacement is inexpensive and warrants a new case only if structural integrity is compromised.
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.”
Plasticizer leaching from TPU
TPU cases do not contact food, lips, or prolonged skin areas in normal use. No cases of systemic exposure or contamination have been documented for earbud protective cases in this material class.
Silicone degradation and particulate shedding
Silicone button elements may degrade or shed fine particles over extended use (1-2 years), particularly if exposed to UV or flexed repeatedly. Risk to user is negligible; particles are unlikely to be inhaled or ingested in meaningful quantity.
Volatile organic compound (VOC) off-gassing
TPU cases are not manufactured with formaldehyde-releasing resins or significant solvent treatments. New-case odor is minimal and dissipates within hours; no chronic exposure risk has been established for this product type.
Allergic sensitization to TPU or silicone additives
Individuals with known TPU or silicone allergies may develop contact dermatitis with extended or repeated skin contact. This is rare but documented in medical literature; users with such sensitivities should test on a small area first.
Microplastic generation or shedding
Abrasion and weathering of TPU and silicone surfaces can release microscopic particles over the product's lifespan. Environmental impact from a single case is negligible; disposal in regular waste is standard practice.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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.
More waterproof earbuds & 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.