OtterBox · Jewelry Cases & Organizers
Lot #279 OtterBox Drybox Waterproof & Crushproof Storage Box - Just
Skip until OtterBox discloses waterproof treatment composition.
OtterBox Drybox uses waterproof coating but makes no PFAS disclosure. Waterproof storage products commonly use water-repellent coating treatments that may contain PFAS, but brand silence prevents assessment.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Plastic storage box with waterproof coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
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.
The full breakdown
What it's made of and why it matters
OtterBox Drybox is injection-molded polypropylene (PP) or polyethylene (PE) with a waterproof sealant applied to seams and closure mechanisms. The waterproof coating is the critical unknown: OtterBox does not publicly disclose whether it uses PFAS-based water repellents (common in waterproof storage products) or alternative treatments. Polypropylene itself is relatively inert when stored at room temperature but can leach additives if exposed to heat, solvents, or prolonged contact with fatty foods.
The brand's record and disclosure
OtterBox is known for rugged protective cases and has built a reputation on durability claims but has not publicly committed to PFAS-free manufacturing or provided transparency on waterproofing chemistry. No major recalls for this specific Drybox model appear in FDA or CPSC records. The brand's silence on PFAS treatment composition is a notable gap compared to competitors who explicitly state fluorocarbon-free or PFAS-free certifications.
How it compares in its category
Hard-case waterproof storage boxes are widely available from brands including Pelican, Nanuk, and mid-tier manufacturers. Many competitors explicitly advertise PFAS-free coatings or use mechanical seals rather than chemical water repellents. OtterBox's lack of disclosure puts this product at a disadvantage in an increasingly transparent market where consumers can choose alternatives with known-safe treatments.
If you buy it
Use only for dry goods or room-temperature items; avoid storing hot food, boiling water, or fatty/acidic substances that might accelerate additive migration. Do not leave in direct sunlight or heat above 60C (140F), as PP becomes soft and additives may leach. Inspect seals and hinges every 6-12 months for cracking or degradation; replace the box if seals fail, as waterproofing is the main value proposition. Clean with mild soap and water; avoid solvents or bleach that could compromise coatings.
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.”
Undisclosed waterproof coating (potential PFAS)
Waterproof sealants in storage boxes commonly use fluorocarbon-based chemistry. OtterBox has not disclosed its treatment; if the coating contains PFOA or PFOS precursors, long-term leaching into food-contact scenarios poses exposure risk, though dry-storage use case mitigates acute risk.
Polymer additives leaching under heat
Polypropylene formulations often contain flame retardants, antioxidants, and processing aids. While safe at room temperature, exposure to sustained heat above 50C or fatty foods can accelerate migration. This product is marketed for storage, not cooking, so risk is low if used as intended.
Microplastic shedding from seal degradation
Hard-case closures and rubber gaskets degrade over time, especially in outdoor or UV-exposed conditions. Microparticles from worn seals could contaminate food if box is reused for food storage after mechanical failure.
Bacterial growth in waterproof seams if moisture trapped
If the box is sealed while wet or if moisture condenses inside, waterproof design prevents air circulation and may promote mold or bacterial colonies. Not a material hazard but a maintenance and use-pattern risk if seal is compromised.
Lead or cadmium in plastic colorants
OtterBox is a major brand with quality oversight; no recalls for heavy metals in Drybox colorants are on record. However, third-party testing of colored plastic cases is rare, so risk cannot be ruled out entirely for darkly pigmented variants.
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 Jewelry Cases & Organizers
Zarges
K470 Aluminum Storage Case 40845
Aluminum with rubber gasket/hinges
Bare aluminum case, lower PFAS concern.
⚠Brand says nothing about PFAS
Zarges
Large 2-Layer KOR Kit
Aluminum or steel case with plastic/polymer interior fittings
Storage kit, lower concern.
⚠Brand says nothing about PFAS
Zarges
Aluminium Eurobox 41l
Aluminium alloy, bare unpainted surface
Lower concern. Bare aluminium storage box with no known PFAS treatments.
⚠Brand says nothing about PFAS
More jewelry cases & organizers 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.