Lunch Boxes, ranked by PFAS grade

What we found October 2026

162 of the 174 lunch boxes PFAS Authority has graded reach its 70 point pass mark for PFAS and other toxins, 93.1% of the category, as of October 2026, and 12 score below it. The highest graded is Klean Kanteen Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid at 100 out of 100.

The full ranking is below, best-graded first, with every score linking to the evidence behind it.

Are lunch boxes safe?

162 of the 174 lunch boxes we graded come back low-concern on our screen and 12 do not. Our grades are model-based assessments built from published materials, ingredient lists, certifications and brand disclosures, not laboratory tests, so they say what we can evidence rather than that anything is safe.

Best graded lunch boxes here

1Klean Kanteen Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid 100 out of 100
2Snapware Meal Box Glass 80 out of 100
3Oxo Steel Pop Big Square Short - 2.8 Qt/2.6 l 80 out of 100

By materialStainless Steel Glass Silicone Uncoated

Start here

The best non-toxic lunch boxes, ranked by grade

See the picks →

Bad · Better · Best lunch boxes

The quickest read, what to skip and the top-graded picks worth buying instead.

Avoid25Poor

Hydro Flask

Carryout Lunch Bag

25/100 safety

Skip; waterproof lunch bag coating likely contains PFAS.

Why avoid it

Better80Excellent

Snapware

Meal Box Glass

80/100 safety

Low PFAS risk. Glass meal box has no known PFAS concern.

Details Check price

Best pick100Excellent

Klean Kanteen

Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid

100/100 safety

Brand PFAS statement on record, which we have not verified.

Details Check best price

Why Klean Kanteen Double Wall Vacuum Insulated wins, and what it beats

Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 3 products it beats, so you can see exactly where the 75 points between the top and the bottom of this lunch boxes ranking come from.

The winner

100Excellent

Klean Kanteen Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid

Made of Stainless steel body, silicone gasket lid seal.

+25Category baseline. The starting point for this type of product, before anything specific to this product is counted.
-10Brand-stated PFAS-free. The brand states this product is PFAS-free. We have not verified the claim.
-20Bare uncoated material. Recorded as a bare, uncoated material with no surface coating or treatment.

What the grade does not fix. Nothing specific to this product adds risk, so what remains is the category baseline that every product here starts from, and our graders recorded 3 other hazards on it. See the full breakdown.

Check price Full breakdown

What it beats, and why

80Excellent20 points behind the winner

Snapware Meal Box Glass

What puts it behind. No PFAS disclosure, +15 points. No public statement from the brand about PFAS in this product. The winner carries no such factor.

Made of borosilicate glass.

+25Category baseline
+15No PFAS disclosure
-20Bare uncoated material

20risk points, a grade of 80

70Good30 points behind the winner

Aladdin Vintage 1984 Gremlins Metal Lunch Box Aladdin No Thermos Gizmo Stripe

What puts it behind. No PFAS disclosure, +15 points. No public statement from the brand about PFAS in this product. The winner carries no such factor.

Made of Steel, metal, vinyl graphic.

+25Category baseline
+15No PFAS disclosure
-10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.

30risk points, a grade of 70

25Poor75 points behind the winner

Oggi Bentgo Kids Stainless Steel Leak Resistant Lunch Box

What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The winner carries no such factor.

Made of stainless steel with leak-resistant gasket/seal.

+35Waterproof / stain-resistant treatment
+25Category baseline
+15No PFAS disclosure. No public statement from the brand about PFAS in this product.

75risk points, a grade of 25

No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.

Worth buying Good or Excellent, best-graded first

Klean Kanteen

Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid

100ExcellentPFAS grade

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.

Lunch Boxes, ranked by PFAS grade

Are lunch boxes safe?

Bad · Better · Best lunch boxes

Why Klean Kanteen Double Wall Vacuum Insulated wins, and what it beats

What it beats, and why

Worth buying Good or Excellent, best-graded first

Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid

Meal Box Glass

Steel Pop Big Square Short - 2.8 Qt/2.6 l

304 Stainless Steel Refrigerator Sealed Pyxis L Size Rectangular Bento Pyxis Lunch Pyxis With Lid Organizer

MealBox Glass Food Storage Container

Bentgo Stainless Steel Insulated Food Container

Cello Stainless Steel Lunch

Lunch Mate - Stainless Steel - Reusable Sandwich Container - Homeplace Market

LocknLock Stainless Steel Food Storage Containers with Lids, Metal Lunch Boxes, Leak-Proof, Microwave, Freezer and Dishw

LocknLock ToGo 2-Tier Stainless Lunch Box, 500ml + 800ml, Snap Lid, Silicone | Multicolor

Launch Stainless Steel Lunch Box

Latchlok Click Stainless Steel Food Storage Container Set

Cook & Freeze Rectangular Dish with Lid 800ml

MealBox Divided Glass Storage Container 5.5 Cup

24 Pc Easy Find Lid Containers & 8 Pc Stainless Container Set

Stainless Steel Bento Box Onyx

Small Plain Metal Lunch Box

Bentgo Kids Stainless Steel Lunch Box

Stainless Steel Food Jar

Stainless Steel Food Jar w-Folding Spoon

Stainless Steel Vacuum Insulated Food Jar

Stainless Steel Lunch Box With 2 Steel Containers

Ms. Bento Stainless Lunch Jar

SL-XE20AD Classic Stainless Lunch Jar

Graded and flagged Poor and Bad, we’d swap these

Bentgo Kids Stainless Steel Leak Resistant Lunch Box

Carryout Lunch Tote

Puffer Lunch Box - Abstract Mulberry

Insulated Lunch Bag

Rectangular Lunch Box 3-Piece Set with Insulated Stripe Bag

12L Lunch Box Flower Party - Flower Party

96000 Sprint Lunch Cooler

Prep & Go Insulated Lunch Tote

3L Daytrip Lunch Box in Olive

Built All Day Insulated Lunch Bag

Limited Edition Crayola Retired Colors Glad Take-aways Orange Red

Carryout Lunch Bag

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