Built NY - Puffer Lunch Box - Abstract Mulberry
Skip until Built NY discloses coating composition or certifies PFAS-free.
Built NY does not disclose PFAS status or coating details for this lunch box. Waterproof-coated fabrics often contain PFAS; without transparency or third-party verification, risk cannot be ruled out.
The better-graded swap
Prepara
Prepara Latchlok Click Stainless Steel Container
80/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polyester outer with unspecified water-resistant coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Built NY - Puffer Lunch Box - Abstract is made of, ingredients and materials
This lunch box uses a polyester fabric exterior with an unnamed water-resistant coating. Polyester itself is stable in food-contact scenarios, but the coating composition is undisclosed, which raises concern about what is used to repel moisture and stains. Water-resistant finishes on textiles commonly rely on fluorochemicals (PFAS) or other treatments that may leach into food or off-gas when exposed to heat. Without the brand naming the coating chemistry, risk cannot be fully assessed.
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Unspecified water-resistant coating (likely fluorochemical)
Built NY does not disclose whether the coating contains PFAS or alternatives. Most polyester food-storage textiles use fluorochemical finishes; this product's silence suggests potential legacy PFAS exposure, especially if food is stored long-term or in warm conditions.
Polyester fiber shedding and microplastic migration
Polyester fabric can shed microfibers, particularly if abraded or washed repeatedly. While the lunch box is not a food-contact surface in direct use, fiber fragments could enter food if the interior lining degrades or if the exterior is heavily worn and sheds onto food containers.
Leaching from coating into acidic or fatty food
If the water-resistant coating contains fluorochemicals or other migration-prone compounds, prolonged contact with acidic foods (citrus, vinegar, tomato) or fatty items (cheese, oils) may accelerate transfer to stored items, especially in warm environments.
What’s reassuring
Interior lining composition (unspecified)
No interior material or coating is named. If it is polyester, nylon, or other synthetic treated with stain or water repellent, similar coating concerns apply. If it is uncoated, risk is lower but durability against oils and acids is unclear.
Formaldehyde / VOCs
Polyester fabric and the Mulberry abstract print are not specified to be OEKO-TEX or otherwise certified dye-free. No recall or test data for this product exists, but conventional polyester textiles may contain residual formaldehyde from manufacturing or azo dyes from pigments, particularly in darker hues.
Source, ATSDR ↗The full breakdown
The brand's record and disclosure
Built NY does not publicly disclose materials, coating chemistry, or PFAS status for this product line. No certifications (such as OEKO-TEX or bluesign) are listed for this model. The brand has not issued statements on fluorochemical alternatives or chemical restriction policies. This silence makes it difficult to verify whether the water-resistant layer uses legacy PFAS, newer per-fluorinated compounds, or non-fluorinated alternatives.
How it compares in its category
Polyester lunch boxes with coated exteriors are common; many brands now specify PFAS-free water-resistant coatings or use untreated neoprene or canvas alternatives. Built NY's generic coating claim is less transparent than competitors offering wax-lined cotton, silicon-treated fabrics, or certified PFAS-free options. The Puffer line prioritizes aesthetic design and thermal retention over chemical disclosure, placing it in the middle tier of the soft lunch-box market in terms of safety transparency.
If you buy it
Keep food in sealed containers inside the lunch box rather than allowing acidic or fatty items to contact the interior directly. Do not wash the exterior in hot water or with aggressive detergents, as this may accelerate leaching of coating residues. Store in a cool, dry place; do not expose to direct sunlight for extended periods, as UV and heat can degrade both polyester and coating. If the interior shows staining, peeling, or odor changes, retire the box.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Built NY has made none
Formulations change between production runs, so check the current label. How we grade.
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More lunch boxes 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.