Featured in The Unplastic Shop, curated with the producers of The Plastic Detox to reduce your daily exposure to microplastics.
The EcoLunchBox Seal Cup Solo is a small, round, leak-proof stainless steel container with a turquoise textured silicone lid and embossed rim. This plastic-free food container is both stylish and functional, shown on a white background. 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. The EcoLunchBox Seal Cup Solo is a round, stainless steel food container with a turquoise silicone lid. Its label promotes the leak-proof design as plastic-free and ocean friendly. The EcoLunchBox Seal Cup Solo, a round stainless steel container with a turquoise lid, is filled with pink yogurt topped with raspberries and blackberries. Three raspberries are placed beside it on a white background. The EcoLunchBox Seal Cup Solo is a small, plastic-free stainless steel food container with a teal lid, shown partially open and filled with berries. Three raspberries sit in front. Text: 7 oz., 7/8 cup, and Seal Cup Solo.
This product contains durable, reusable plastic, defined by the EPA as lasting 3 years or more. There is no single-use plastic.
The EcoLunchBox Seal Cup Solo is a small, round, leak-proof stainless steel container with a turquoise textured silicone lid and embossed rim. This plastic-free food container is both stylish and functional, shown on a white background.

EcoLunchBox Seal Cup™ Solo - Leak-Proof Snack Container

7 oz

Why we love it

  • Free from thousands of banned ingredients and meets our EU-informed standards.
  • Stainless steel construction ensures a durable and reusable food storage solution.
  • Leak-proof design makes it perfect for transporting meals and snacks on the go.
  • Contributes to a healthier ocean by avoiding synthetic materials.

$13.00

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

Enjoy the convenience of a leak-proof container without any plastic. Our Seal Cup Solo is a versatile stainless steel cup. It's part of ECOlunchbox's plastic-free Blue Water Bento collection featuring ocean-friendly, leak-proof food containers.

Product Details

  • No-leak stainless steel container with silicone lid holds 7 oz. (7/8 cup)
  • Measures 3 1/2 inches round by 1 3/4 inches tall
  • The container is made from food-safe 18/8 stainless steel 304 with a no-leak silicone lid
  • Tare weight 2.1 oz. etched on the bottom along with the equivalent in grams and pounds so food container may be used at food bars and delis that charge by food weight
  • Container's space-saving design nests and stacks for compact storage
  • This steel and silicone container is lighter than glass containers and non-breakable
  • All parts are dishwasher and oven safe

Container: Food-Safe 18/8 Stainless Steel 304 No-Leak Lid: Silicone

All parts of this large lunchbox are dishwasher and oven safe. Not for use in the microwave
This product contains durable, reusable plastic, defined by the EPA as lasting 3 years or more. There is no single-use plastic.

Let’s end the plastic era for good.

This product contains durable, reusable plastic, defined by the EPA as lasting 3 years or more. There is no single-use plastic.

Go Beyond Plastic

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More from The Unplastic Shop

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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