Seal Cup Trio

What makes it Mighty?

  • Steel and silicone lunch and snack containers
  • Ocean friendly & kid friendly
  • Plastic free and leakproof

Plastic free and leakproof, the steel and silicone Seal Cup™ Trio is the perfect container set for packing three different items and keeping the foods separate. Part of ECOlunchbox’s ocean-inspired Blue Water Bento collection, these lunch containers are designed FOR the ocean and BY the ocean — made with non-toxic, environmentally-friendly materials, the Seal Cup Trio makes your lunches greener and our oceans cleaner by keeping dangerous plastics out of your lunch and our oceans.

  • Lighter than glass containers and nonbreakable
  • Tare weights are etched on the bottom of each container so they may be used at food bars and delis that charge by food weight

Trio Set includes:
Small — 3 1/2” x 2”, 1 cup capacity
Medium — 4 1/8” x 2 1/8”, 1 1/2 cups capacity
Large — 4 3/4” x 2 1/4”, 2 1/2 cups capacity

Size: Total set capacity 40 oz. (5 cups)

Use and care:

All parts are dishwasher and oven safe

Where is it made?
this product scores 3

Mighty Rating:

this product scores 3

Package free; primarily compostable except very minor components (e.g. plastic toggles or small stickers)

How is it packaged?
Paper label
End of use:
Discard with general waste
this product scores 2
Seal Cup Trio
Seal Cup Trio

Mighty Rating:

this product scores 2
Reusable and primary material is silicone or plastic-free, may have functional parts (e.g. lids) made from plastics or synthetic materials

Materials Details

Non-toxic silicone lid and type 304 stainless container 

Add your take

mighty bird

Overall Score

one review
Review by Frazer on 9/1

About a month ago I ordered these (also the mini and XL seal cups) to have an alternative to my Pyrex glass containers, which aren’t leak proof. These have been very useful, and I tend to use at least one when packing my lunches for work. I haven’t had any leaks with the cut fruit and veggies, hummus, or thick stew (I use a bowl at work to reheat) that I’ve had inside. I try remember to grab the large container (orange lid) when I go out to restaurants so I can use it as a take-away container for my leftovers, and it has worked really well for that. All of the containers, including the mini and XL, can nest together with the lids. For storage, I place the lids under their containers as it cuts down on noise when taking them in and out of the cabinet. I have not washed them in my dishwasher, but instead hand wash them so I can use them the next day.

About Eco LunchBox

ECOlunchbox was born of the idea that change can begin at lunchtime. I wanted to make a change in how I packed my family’s lunches – to cut out the plastic and do the right thing for our health as well as Mother Earth. It seemed like a pretty simple concept. Design a food container out of something plastic-free and make it available to friends, family and through an online store. Since founding ECOlunchbox as a triple-bottom-line social enterprise in 2009, the business has scaled beyond my initial vision.

About MightyNest

We make it easy for families to create a healthy home. Each of our 1000+ products has been thoroughly researched to be free of concerning chemicals, and hand-picked for its quality and design. With products for the whole family, ranging from kitchenware to reusable lunch gear to skincare, it is truly better living made easy.

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