• THE UNPLASTIC SHOP
  • THE UNPLASTIC SHOP
  • THE UNPLASTIC SHOP
The EcoLunchBox Three-in-One Classic Stainless Steel Lunch Box features sturdy metal clasps, a modern design, and a beige-green label indicating it's dishwasher safe and plastic free—perfect for packing sandwiches and sides. Text graphic reads: The Unplastic Shop. Curated by the Oceanic Preservation Society — the production team behind The Plastic Detox, now streaming worldwide — to reduce plastic exposure where it matters most. EcoLunchBox’s Three-in-One Classic Stainless Steel Lunch Box set features three nesting, plastic-free containers of varying sizes, each with secure metal latches, stacked bento style with the largest slightly open at the bottom. The EcoLunchBox Three-in-One Classic Stainless Steel Lunch Box features three nesting rectangular containers stacked on the right and one open, plastic-free handled lunchbox on the left, all shown against a white background. Three EcoLunchBox Three-in-One Classic Stainless Steel Lunch Boxes in varying sizes are stacked with lids off. The largest has extended metal handles. This shiny, reflective set is plastic-free and designed for easy nesting.
Beyond Plastic 100% Plastic Free
The EcoLunchBox Three-in-One Classic Stainless Steel Lunch Box features sturdy metal clasps, a modern design, and a beige-green label indicating it's dishwasher safe and plastic free—perfect for packing sandwiches and sides.

EcoLunchBox Three-in-One Classic Stainless Steel Lunch Box Set

1 item

Why we love it

  • A high-impact upgrade for reducing plastic exposure in your daily routine.
  • Free from 3,000+ banned ingredients and meets our EU-informed standards.
  • Made from 100% high-quality 201 food-grade stainless steel.
  • Nested design keeps different foods separate and prevents squishing.
  • Avoids estrogen-mimicking chemicals like BPA, phthalates, and BPS.
$40.00 $40.00 Save 0%

Three-in-One Classic Stainless Steel Lunch Box Set $40.00

Free carbon neutral shipping on orders $29+. Arrives in 3–5 days. Free, easy 30-day returns.

This ECOlunchbox Three-in-One is a three-piece nesting lunch box set. This nesting lunchbox also makes it easy to pack a variety of foods and keep them all separate - and safe from squishing! Our Three-in-One is perfect for packing a healthy entree and two side dishes.

The Three-in-One is modular. You can pull out the snack container and use it separately, freeing up more space in the upstairs for more food.

Our best-selling bento, the Three in One is a 100% high-quality, 201 food-grade stainless steel container. Because it does not contain plastic, the lunchbox is free of all estrogen-mimicking chemicals, such as bisphenol-A (BPA), phthalates, and bisphenol-S (BPS). But it's not leak-proof since no plastic gaskets are used.

Product Details:

  • 3 piece nesting bento set. Includes upper and lower food containers plus a snack container
  • Durable design uses 100% high quality, food-grade stainless steel 
  • 31 oz capacity (3.8 cups) Total. Bottom section: 12 oz capacity (1.5 cups). Top section: 14 oz capacity (1.75 cups). Snack container: 5 oz capacity (.75 cup)
  • Measures 4" wide x 5.5" long x 2.75" high
  • Three different sections keep food from touching and mixing
  • Tare Weight: 16 oz
  • Non-toxic: free of estrogen-mimicking toxins commonly found in plastic, such as BPA (bisphenol-A), BPS (bisphenol-S) and phthalates
  • Kid-tested clips can be adjusted looser or tighter
  • Container is not leak-proof since no plastic gaskets are used. If you need to pack something wet in the top layer, such as dressings or dips - our Seal Cup Mini will nest upstairs
  • Dishwasher safe. Not for use in microwave
  • Made in India

Food-Grade Stainless Steel

Container is Not Leak-Proof Since no Plastic Gaskets are Used. Dishwasher safe. Not for use in microwave

Grove Values

More from The Unplastic Shop

Shop The Unplastic Shop
A collection of eco-friendly household items including a metal lunchbox, reusable bamboo utensils, toothpaste tablets, bamboo toothbrush, dish scrub, cleaning cubes, dish soap, and colored pencils, all arranged on a wooden board.
The unplastic shop

Curated to reduce plastic exposure where it matters most

Everything in this shop meets expert-backed criteria developed with the Oceanic Preservation Society — prioritizing reduced plastic where it counts most.

✓ Plastic never touches anything you ingest

✓ Free from BPA and all “BP” alternatives

✓ Free from PFAS and other “forever chemicals”

✓ Selected to avoid endocrine-disrupting chemicals (EDCs) and other chemicals associated with hormone disruption

Download the Standards
A flat lay of powdered ingredients, gummy candies, a glass of pink liquid, a gold spoon with powder, and a container with an orange slice label, all on a pastel green background.

Grove Collaborative

10,000+ ingredients reviewed. 3,000+ banned outright.

Our most comprehensive standards yet — across your whole home.

Explore Our EU-Informed Ingredient Standards