The Best Uncoated Lunch Boxes of 2026
All 12 products with no coating at all in our lunch boxes database, graded Bad to Excellent and ranked lowest risk first. 12 earn a buy-worthy grade.
Why Ello Cello Stainless Steel Lunch 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 1 product it beats, so you can see exactly where the 10 points between the top and the bottom of this uncoated lunch boxes ranking come from.
The winner
Made of Stainless steel, bare uncoated.
- +25Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
- -20Bare uncoated material. Recorded as a bare, uncoated material with no surface coating or treatment.
20risk points in total, which is a grade of 80
What the grade does not fix. It still carries one risk factor, No PFAS disclosure. See the full breakdown.
What it beats, and why
![Lock & Lock [Lock & Lock] Stainless Steel Thermal Dosirak](/img/10754/lock-lock-lock-lock-stainless-steel-thermal-dosirak)
What puts it behind. The winner earns -20 points for Bare uncoated material. We found nothing comparable published for this product.
Made of stainless steel, no coating specified.
- +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
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.
All 12 uncoated lunch boxes, best graded first
Ello
Cello Stainless Steel Lunch
- Stainless steel, bare uncoated
- We found no PFAS statement from the brand
- Gasket and seal integrity
Essaware
Lunch Mate - Stainless Steel - Reusable Sandwich Container - Homeplace Market
- Stainless steel, bare uncoated
- We found no PFAS statement from the brand
- Nickel leaching
2 hazards checked on this product. See all of them.
Planetbox
Launch Stainless Steel Lunch Box
- Stainless steel container, no coating disclosed
- We found no PFAS statement from the brand
- Rubber gasket degradation
2 hazards checked on this product. See all of them.
Rubbermaid
24 Pc Easy Find Lid Containers & 8 Pc Stainless Container Set
- Polypropylene and stainless steel (bare, uncoated)
- We found no PFAS statement from the brand
- Plastic degradation and microplastic shedding
2 hazards checked on this product. See all of them.
Small Plain Metal Lunch Box
- Bare stainless steel or painted metal
- We found no PFAS statement from the brand
- Stainless steel ion leaching (nickel, chromium)
2 hazards checked on this product. See all of them.
Thermos
Stainless Steel Food Jar w-Folding Spoon
- stainless steel body, uncoated interior
- We found no PFAS statement from the brand
- Nickel leaching from stainless steel
2 hazards checked on this product. See all of them.
Thermos
Stainless Steel Vacuum Insulated Food Jar
- stainless steel, vacuum-sealed, no coating
- We found no PFAS statement from the brand
- Stainless steel corrosion and nickel leaching
2 hazards checked on this product. See all of them.
Zojirushi
SL-XE20AD Classic Stainless Lunch Jar
- Stainless steel interior and exterior, no nonstick or waterproof coatings
- Nickel leaching from stainless steel
2 hazards checked on this product. See all of them.
Ozark Trail
40 oz Stainless Steel Lunch Box
- Stainless steel body, uncoated interior
- We found no PFAS statement from the brand
- Nickel leaching (from 304 stainless steel alloy)
3 hazards checked on this product. See all of them.
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)
3 hazards checked on this product. See all of them.
IKEA
FRAMTUNG lunch bag
- polyester exterior, polyethylene foam insulation, uncoated food-contact lining
- We found no PFAS statement from the brand
- Microplastics
2 hazards checked on this product. See all of them.
Rubbermaid
Brilliance Meal Prep 2-Compartment Food Containers
- polypropylene (PP) plastic, no coating disclosed
- We found no PFAS statement from the brand
- Microplastics
2 hazards checked on this product. See all of them.
Every material, ranked together, is in the full lunch boxes ranking →