Best Vacuum Insulated Bento Boxes in 2026

THE ORIGINAL THREE-IN-ONE CLASSIC BY ECOLUNCHBOX: Introduced to market in 2008, this double decker container with a nesting snack pod is built to last from 100% rugged and tested stainless steel. The ECOlunchbox Three-in-One holds a total of 4 cups (32 oz / 946ml) of food. When clipped together with the snack container inside the upper level, it measures 5 ½ inches long by 4 inches wide by 2 ¾ inches tall.

NOT LEAK-PROOF: The container’s stainless steel lid is easy to use. There are no gaskets in this lunchbox’s design, so it’s not appropriate for packing wet foods that might leak. If you’re looking for a leak-proof food container, check out other products by ECOlunchbox, such as our Blue Water Bento Splash Box and Blue Water Bento Seal Cup Trio that have leak-proof silicone lids.

100% PLASTIC FREE, NON-BREAKABLE & BPA-FREE: Made from high-quality, food-safe stainless steel. Steel container is lighter than a comparable glass container and virtually non-breakable. ECOlunchbox stainless steel food containers, which are third party independently tested, are free of estrogen-mimicking toxins commonly found in plastic, such as BPA (bisphenol-A), BPS (bisphenol-S) and phthalates.

THREE-PIECE LARGE BENTO BOX: Built to last from 100% rugged and tested stainless steel. Holds 8 cups of food in two levels and a nesting snack container. The container, which clips together, is divided into three different compartments to keep foods separate, including a lower compartment, an upper compartment and a nesting snack container. When clipped closed, the Giant measures 5 1/4 inches wide, 7 inches long and 3 inches high.

NOT LEAK-PROOF: The container’s stainless steel lid is easy to use. There are no gaskets in this lunchbox’s design, so it’s not appropriate for packing wet foods that might leak. If you’re looking for a leak-proof food container, check out other products by ECOlunchbox, such as our Blue Water Bento Splash Box and Blue Water Bento Seal Cup Trio that have leak-proof silicone lids.

100% PLASTIC FREE, NON-BREAKABLE & BPA-FREE: Made from high-quality, food-safe stainless steel. Steel container is lighter than a comparable glass container and virtually non-breakable. ECOlunchbox stainless steel food containers, which are third party independently tested, are free of estrogen-mimicking toxins commonly found in plastic, such as BPA (bisphenol-A), BPS (bisphenol-S) and phthalates.

RECTANGULAR STAINLESS STEEL SANDWICH BOX: Built to last from 100% rugged and tested stainless steel, this ECOlunchbox holds 29 oz (3 ⅔ cups) and measures 6 ¾ inches long by 4 ¾ inches wide by 2 inches tall. The stainless steel lunchbox container is ideally sized for packing a sandwich on sliced bread, crackers, cheese, nuts, cut carrots or anything else that not too wet.

NOT LEAK-PROOF: The container’s stainless steel lid is easy to use. There are no gaskets in this lunchbox’s design, so it’s not appropriate for packing wet foods that might leak. If you’re looking for a leak-proof food container, check out other products by ECOlunchbox, such as our Blue Water Bento Splash Box and Blue Water Bento Seal Cup Trio that have leak-proof silicone lids.

100% PLASTIC FREE, NON-BREAKABLE & BPA-FREE: Made from high-quality, food-safe stainless steel. Steel container is lighter than a comparable glass container and virtually non-breakable. ECOlunchbox stainless steel food containers, which are third party independently tested, are free of estrogen-mimicking toxins commonly found in plastic, such as BPA (bisphenol-A), BPS (bisphenol-S) and phthalates.

PLASTIC-FREE RECTANGULAR LARGE LUNCHBOX: Plastic-free and leak-proof, this 24 oz. rectangular stainless steel container is topped with a silicone lid. The Blue Water Bento Splash Box holds 3 cups (709 ml) and measures 6 ½ inches long by 4 ¾ inches wide by 2 inches tall. The non-toxic stainless steel lunchbox is ideally sized for packing a main dish to eat on the go at school, work or in the great outdoors. It’s perfect for leftovers, salads, pastas, sandwiches and more!

NESTS & STACKS: Container nests and stacks one inside the other for compact storage in your cupboard. Real Simple Magazine selected the Blue Water Bento container collection as the best eco-friendly bentos for compact storage. This eco-friendly ECOlunchbox container is part of the 6-piece Blue Water Bento Seal Cup Collection, which includes the Mini, Small, Medium, Large, XL and Jumbo Seal Cups. Each container features an embossed ocean motif on its colorful lid.

100% PLASTIC FREE, NON-BREAKABLE & BPA-FREE: Made from the highest quality 18/8 stainless steel and silicone components. Steel and silicone container is lighter than a comparable glass container and is virtually non-breakable. Our stainless steel food containers are third party independently tested for food safety compliance with USA and EU standards.

2-PIECE SET OVAL AND CUP CONTAINER: Built to last from 100% rugged and tested 18/8, 304 stainless steel, this ECOlunchbox Oval holds 3 cups (24 oz) and the no-leak cup with silicone lid holds .75 cup (7oz). This is a box for nearly every occasion given the generous size and the super convenient leak-proof cup for dressings, sauces, toppings, etc. The large Oval container does not have gaskets so it's intended for foods that are not too wet.

EASY USE AND CARE: The container’s stainless steel clips and lid are easy to use, even for small hands. The 2-piece set is dishwasher safe and appropriate for heating food in the oven at medium heats. Not for use in the microwave.

100% PLASTIC FREE, NON-BREAKABLE & BPA-FREE: Made from high-quality, food-safe stainless steel. Steel container is lighter than a comparable glass container and virtually non-breakable. ECOlunchbox stainless steel food containers, which are third party independently tested, are free of estrogen-mimicking toxins commonly found in plastic, such as BPA (bisphenol-A), BPS (bisphenol-S) and phthalates.

THREE-PIECE LAYERED MEAL CONTAINER: Built to last from 100% rugged and tested stainless steel, this ECOlunchbox holds 4.5 cups (36 oz) food all together in three levels. Each level holds 1.5 cups (12 oz) and is clipped together. The stainless steel Tri Bento measures 4 inches high and 5.25 inches in diameter. The size fits a full meal and is ideal for all types of foods so long as they are not too wet.

NOT LEAK-PROOF: The container’s stainless steel lid is easy to use, even for young children. There are no gaskets in this lunchbox’s design, so it’s not appropriate for packing wet foods that might leak. If you’re looking for a leak-proof food container, check out other products by ECOlunchbox, such as our Blue Water Bento Splash Box and Blue Water Bento Seal Cup Trio that have silicone lids.

100% PLASTIC-FREE, NON-BREAKABLE & BPA-FREE: Made from high-quality, food-safe stainless steel. Steel container is lighter than a comparable glass container and virtually non-breakable. ECOlunchbox stainless steel food containers, which are third party independently tested, are free of estrogen-mimicking toxins commonly found in plastic, such as BPA (bisphenol-A), BPS (bisphenol-S) and phthalates.

Round stainless steel container with a no-leak silicone gasket and easy-to-use, soft-close clips. Not insulated.

Great size for lunch entrees and leftovers. Capacity is 24 oz / 3 cups (700 ml). Measures 5 ¼ inches round by 2 ¾ inches tall.

A clear food-grade silicone gasket, which is tucked inside the perimeter of the lid, creates a leak-proof seal when the lunch box is clipped closed. The gasket can be removed for cleaning.