Lock&Lock Dosilock 3 Layers Multicolor Lunch Box Set Starter Pack with Spoon Chopsticks
Lower concern lunch box set; no PFAS-prone coatings identified.
Lock&Lock Dosilock uses polypropylene plastic and stainless steel with no reported nonstick or water-repellent treatments. No brand PFAS disclosure found; material composition suggests lower inherent PFAS risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Polypropylene (PP) plastic containers with stainless steel utensils
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Lock&Lock Dosilock 3 Layers Multicolor is made of, ingredients and materials
The containers are polypropylene (PP, plastic #5), a thermoplastic chosen for food storage because it resists moisture and has a higher melting point than many other food-contact plastics. PP does not contain BPA or BPS by formulation. The stainless steel spoon and chopsticks are chemically inert and do not leach under normal use. The main concern with PP is that at sustained high temperatures (above 100°C), the polymer can degrade and shed microplastics, though food-contact PP is formulated to minimize this within typical storage and dishwashing conditions.
What’s concerning
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.
Microplastics
Polypropylene can degrade and release microplastics if heated above its safe temperature range or if scratched or degraded over time. Normal cold-to-warm food storage and hand washing pose low risk; sustained high heat or microwave abuse increases this concern.
Source, EPA ↗Bacterial growth in seals and gaskets
Food-storage containers with interlocking lids and rubber or silicone seals can trap moisture and food residue, creating conditions for mold or bacterial colonization if not dried thoroughly after washing and stored in a dry environment.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
BPA & bisphenols
Polypropylene is not formulated with bisphenols. No BPA or BPS is expected in this product.
Source, FDA ↗Phthalates
PP does not require phthalate plasticizers for flexibility. This product is not on record as containing phthalates.
Source, ATSDR ↗Coating or finish degradation
No decorative coatings, enamels, or special surface treatments are documented for these containers. Printed graphics on the exterior may fade with age or dishwashing, but this is cosmetic and not a toxicological hazard.
The full breakdown
The brand's record and disclosure
Lock & Lock is a South Korean manufacturer with a large global food-storage portfolio and no established public recalls or safety notices specific to their PP containers in the food-contact category. The brand has not published detailed materials disclosure or third-party certifications (e.g., FDA compliance statements, BPA-free declarations) in widely available consumer channels, though PP containers are generally assumed FDA-compliant if sold in regulated markets. No major environmental or chemical controversies are on record for this product line.
How it compares in its category
PP food containers are a mainstream choice and considered lower-risk relative to older PVC or polycarbonate designs. This multipart set with matching utensils is typical mid-market lunch box packaging; it occupies the same hazard profile as Rubbermaid, Pyrex plastic, and store-brand PP lunch sets. Stainless steel utensils are preferable to plastic utensils (which can leach additives) and more durable long-term.
If you buy it
Avoid prolonged contact with hot liquids (above 65°C / 150°F) or direct heat; transfer food to glass or ceramic when reheating. Do not microwave the containers at high power or for extended periods. Hand wash in warm soapy water or use the top rack of the dishwasher; inspect the lids and seals yearly for cracks or warping, and replace if damaged. Store dry and well-ventilated to prevent mold growth in the seal channels.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Lock & Lock has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Lunch Boxes
Klean Kanteen
Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid
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- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation
3 hazards checked on this product. See all of them.
Snapware
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- borosilicate glass
- We found no PFAS statement from the brand
- Leaching from glass matrix or lid seals
2 hazards checked on this product. See all of them.
OXO
Steel Pop Big Square Short - 2.8 Qt/2.6 l
- Stainless steel container, no surface treatment
- Lid/gasket polymer leaching
3 hazards checked on this product. See all of them.
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.