In-depth review
OmieBox Bento Box Review (2026)
In-depth review of the OmieBox: vacuum-insulated food jar, two temperature zones, three compartments, weight, and hand-wash trade-offs.
Omie OmieBox Bento Box with Leak-Proof Insulated Food Jar, Sunshine
Hot pasta and cold fruit in one box: a vacuum-insulated jar sits inside a three-compartment bento, so warm and cold travel together.
Our verdict
The OmieBox is the best lunch box for parents who send warm food to school, because it solves the one problem no other box here touches: hot pasta beside cold fruit, in a single box, with no separate thermos to forget. It is heavy at 1.7 lb and it is hand wash only, but for a child who will only eat a warm lunch, those trade-offs are worth it. Buy it for warm school lunches; skip it if your child is small or your mornings cannot spare hand washing.
What we like
- The removable 18/8 stainless steel vacuum jar keeps hot food warm for hours, so pasta and soup can go to school.
- Two temperature zones let warm food sit beside cold fruit and veg without either side suffering.
- Three compartments plus the jar cover a full meal in one box, with no bag of extra containers.
- Seals and dividers are replaceable, and the box comes apart for a thorough clean.
What to watch out for
- At 1.7 lb empty, it is the heaviest kids box here, and small children feel the weight in a backpack.
- Hand wash only, so daily cleaning takes more effort than a dishwasher-safe box.
- The latch can be hard for small hands to close, and the jar seal needs care to stay fresh.
- Warm retention depends on preheating the jar, so a cold jar and cold food will not warm up on their own.
Who it is for
Parents who want to send warm food to school without a separate thermos, for kids aged 3 and up.
The jar is the whole idea
The OmieBox is built around its removable 18/8 stainless steel vacuum jar, which sits in the middle of the box and holds the warm main course while the compartments around it hold cold sides. That two-temperature design is what makes it different from every other box here: a child gets warm pasta and cold fruit from the same box, at the same table, with no juggling of containers. Warm retention depends on preheating the jar with hot water first, so the routine matters as much as the jar itself.
Weight and washing are the real costs
At 1.7 lb empty, the OmieBox is the heaviest kids box here, and small children feel it in a backpack, especially once food goes in. It is also hand wash only, with seals and a jar that need proper cleaning after every use, and the latch can be stiff for the youngest hands. The seals and dividers are replaceable, which is a genuine plus: a worn seal does not mean a new box, and the box is built to last for years rather than a single school term.
How it stacks up
Against the Bentgo Kids Chill, OmieBox wins on warm food while the Chill wins on cold food, weight, and dishwasher cleaning. Against the PlanetBox Rover, OmieBox wins on temperature and sealing, while PlanetBox wins on durability and easy cleaning. Against the Bentgo Kids Prints, OmieBox wins on warm meals, while Bentgo wins on weight, price position, and a simpler routine.
What owners report
Commonly praised
- Vacuum jar keeps pasta and soup warm beside cold fruit in the same box
- seals and dividers come out for a thorough clean and can be replaced
- one box replaces a thermos plus separate containers
Common complaints
- Heavy at 1.7 lb before food goes in, too much for small children to carry far
- hand wash only, so cleaning takes longer every night
- latch can be hard for the youngest hands to close
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
Key specifications
- Compartments
- 3
- Food jar
- 18/8 304 stainless steel, vacuum insulated
- Weight
- 1.7 lb
- Ages
- 3+ years
- Material
- BPA and phthalate-free plastic
- Care
- Hand wash only
Also consider
Bentgo Kids Chill 4-Compartment Lunch Box with Built-In Ice Pack, Fuchsia/Teal
The cold-lunch fix: a built-in ice pack under the tray keeps yogurt and fruit cool until lunchtime, with no loose pack to lose.
- Compartments: 4
- Capacity: 3.33 cups
PlanetBox Rover Classic Stainless Steel Bento Lunch Box, 5 Compartments
The steel workhorse: five compartments in one solid stainless box that can take years of school days.
- Compartments: 5 (4 plus treat spot)
- Dimensions: 10 x 7.5 x 1.5 in
Research-based assessment. ThePickLedger has not hands-on tested this product; this evaluation synthesizes manufacturer specifications, retailer documentation, and published expert reviews.
Questions, answered
Does the OmieBox really keep food warm until lunch?
It keeps food warm for hours when the jar is preheated with boiling water and filled with hot food, though food will be warm rather than piping hot by lunchtime. A cold jar filled with warm food loses heat fast, so preheating is part of the routine, not an optional extra.
Is the OmieBox too heavy for a kindergartner?
It can be. At 1.7 lb empty plus food, it is noticeably heavier than the Bentgo Kids boxes. Smaller children may struggle to carry it, and the latch can be hard for small hands. For younger or smaller kids, the Bentgo Kids Prints is the lighter choice.
Can I remove the jar and use it as a normal bento?
Yes, the jar lifts out, and the space it leaves can hold a sandwich instead. That flexibility is useful on days when warm food is not on the menu, though the box is still heavier than a plain bento.