Do Lock & Lock lunch boxes have PFAS?
Lock & Lock lunch boxes average 68 out of 100 on PFAS Authority's PFAS and toxin screen across the 7 Lock & Lock lunch boxes graded as of October 2026, below the 70 out of 100 median for the 43 other lunch boxes brands graded alongside it.
Lock & Lock lunch boxes average Good on our four-band scale. 6 of the 7 we graded are worth buying. That is above 16% of the lunch boxes brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Lock & Lock lunch boxes worth buying Good or better, best-graded first
Lock & Lock
LocknLock Stainless Steel Food Storage Containers with Lids, Metal Lunch Boxes, Leak-Proof, Microwave, Freezer and Dishw
- Stainless steel and metal
- We found no PFAS statement from the brand
- Silicone gasket degradation, The rubber or silicone seals in the lids can crack, harden, or develop mold if…
2 hazards checked on this product. See all of them.
Lock & Lock
LocknLock ToGo 2-Tier Stainless Lunch Box, 500ml + 800ml, Snap Lid, Silicone | Multicolor
- stainless steel containers, silicone seals, snap lids
- We found no PFAS statement from the brand
- Silicone seal degradation over time, Silicone gaskets can lose elasticity, crack, or develop odor after years…
3 hazards checked on this product. See all of them.
Lock & Lock
Lock&Lock Insulated Lunch Box, Stainless Steel Lunch Box, Insulated Bowl For Baby Food, Lunch Box For Elementary School
- stainless steel body, standard plastic lids and seals
- We found no PFAS statement from the brand
- BPA & bisphenols, Lock & Lock does not disclose the resin type or chemical composition of lids and seals.…
3 hazards checked on this product. See all of them.
![[Lock & Lock] Stainless Steel Thermal Dosirak](/img/10754/lock-lock-lock-lock-stainless-steel-thermal-dosirak)
Lock & Lock
[Lock & Lock] Stainless Steel Thermal Dosirak
- stainless steel, no coating specified
- We found no PFAS statement from the brand
- Gasket/seal leaching (rubber or silicone), The thermal dosirak likely contains silicone or rubber seals or…
3 hazards checked on this product. See all of them.
Lock & Lock
Lock&Lock Dosilock 3 Layers Multicolor Lunch Box Set Starter Pack with Spoon Chopsticks
- Polypropylene (PP) plastic containers with stainless steel utensils
- We found no PFAS statement from the brand
- Microplastics, Polypropylene can degrade and release microplastics if heated above its safe temperature range…
2 hazards checked on this product. See all of them.
Lock & Lock
LocknLock 3-Piece Lunch Box Set
- polypropylene containers, stainless steel latch hardware
- We found no PFAS statement from the brand
- Microplastics, Polypropylene can shed particles if scratched, compressed repeatedly, or exposed to prolonged…
2 hazards checked on this product. See all of them.
Graded and flagged Poor and Bad, we’d swap these
Lock & Lock
Rectangular Lunch Box 3-Piece Set with Insulated Stripe Bag
- polypropylene food containers, insulated polyester bag with water-repellent finish
- We found no PFAS statement from the brand
- Migration from polypropylene (oligomers, additives), PP containers may release trace oligomers or stabilizer…
2 hazards checked on this product. See all of them.
Better lunch boxes from other brands
Graded higher than the Lock & Lock average of 68.
Klean Kanteen
Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid
- Stainless steel body, silicone gasket lid seal
- 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
Meal Box Glass
- 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.
The same question, asked of the other lunch boxes brands
Best average grade first. Lock & Lock averages 68.
See every Lock & Lock product we grade on the Lock & Lock brand page, or the full lunch boxes ranking.