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Seal Cup Trio
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Product Details

Plastic-free and leak-proof, the Seal Cup™ Trio is the perfect container set for packing three different items and keeping the foods separate.Pack up the trio of round containers with food in the morning and when you're ready to pack up to tote them home, nest them one inside the other to transport them compactly. The Seal Cup Trio makes your lunches greener and our oceans cleaner by keeping plastics out of your lunch and our oceans.


  • Steel and silicone container is lighter than glass containers and nonbreakable.
  • All parts are dishwasher and oven safe
  • Non-toxic silicone lid and type 304 stainless container are free of estrogen-mimicking chemicals commonly found in plastics like BPA, BPS, and phthalates
  • 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
  • Total set weight 9.6 oz.
  • Total set capacity 40 oz. (5 cups)
  • Made responsibly in China


Product Dimensions:

Small container measures 3.5” diameter by 2" tall. Capacity is 8 oz. (1 cup). Tare weight is 2.1 oz.

Medium container measures 4.1” diameter by 2.1” tall. Capacity is 12 oz. (1.5 cups). Tare weight is 3.1 oz.

Large container measures 4.75” diameter by 2.25” tall. Capacity is 20 oz. (2.5 cups). Tare weight is 4.4 oz.

Made by Eco LunchBox

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Customer Ratings and Reviews

Overall Score

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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.

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.