OmieBox Bento Box with Thermos for Kids Review | R3
R3 Verified
$39.99
MSRPvs ~$36-$52 avg
OmieLife
OmieBox Bento Box with Thermos for Kids
8.0/10
Good
459 reviews analyzed|High confidence
How we score▾
The R3 Score is a weighted average of 10 criteria specific to lunch boxs. Safety and its primary function carry more weight than nice-to-haves.
Score breakdown
The bottom line
Here's what we'd tell a friend
What you should know first
The built-in thermos compartment is the whole selling point — it keeps one food hot or cold while the other sections stay room temp. But cleaning that thermos section is genuinely annoying, and at $40 for a plastic box, the value depends entirely on whether you'll use the thermos daily.
Go for it if...
You want hot and cold foods in the same lunchbox — the built-in thermos is unique in this category
We dug through 459 reviews — the integrated 4oz thermos compartment earns a 9/10 on compartment design — the only bento in this group that keeps soup hot alongside cold sides — but the real-world thermos capacity is small for hungry older kids, making this the right pick for toddler-to-early-elementary families who want hot lunch included without a separate thermos
How does OmieBox Bento Box with Thermos for Kids perform on compartment design?▼
This product scores 9.0/10 on compartment design, which is one of its strongest areas.
Is the OmieBox Bento Box with Thermos for Kids worth $39.99?▼
At $39.99, it offers fair value. Consider your priorities and whether the strengths align with what matters most to you.
Is the OmieBox Bento Box with Thermos for Kids right for my family?▼
Based on our analysis of 10 factors, this lunch box scores 8.0/10 overall. Check the "Go for it if..." and "Maybe skip if..." sections above for personalized guidance.
Care & Tips
Keep your OmieBox Bento Box with Thermos for Kids performing at its best
Wash all compartments with warm soapy water after every use — food residue left overnight causes stains and odors that become permanent.
After each use~3 min
Remove and wash the silicone gasket or seal around the lid separately — this is where food particles and mold accumulate most.
After each use
For stubborn stains or odors, soak in warm water with baking soda for 30 minutes before scrubbing.
As needed~30 min
Store with the lid slightly ajar when empty so air can circulate and prevent musty odors from building up.
Avoid using abrasive scrubbers on stainless steel compartments — they scratch the surface and create microscopic grooves where bacteria can hide.
Check latch mechanisms and seals regularly for wear. A degraded seal means leaks in your bag — replace the gasket annually or when it shows cracking.
Monthly check
Pro Tip
Check latch mechanisms and seals regularly for wear. A degraded seal means leaks in your bag — replace the gasket annually or when it shows cracking.
Where to buy
Verified retailers with current pricing
OmieBox Bento Box with Thermos for Kids
OmieLife
$39.99
$59.98Save $20 (33% off)
Prime eligible
In stock
Free shipping with Prime
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Last reviewed: March 6, 2026 · Based on 459 verified purchase reviews
Nothing ruins a day like a soaked backpack. I test every lunchbox upside down before it goes to school.
Nothing ruins a day like a soaked backpack. I test every lunchbox upside down before it goes to school.
Compartment design determines how fast I can pack and whether my kid actually eats everything I pack.
Compartment design determines how fast I can pack and whether my kid actually eats everything I pack.
Food safety is the real question — it's not just about taste, it's about cold items staying at safe temps through lunch.
Food safety is the real question — it's not just about taste, it's about cold items staying at safe temps through lunch.
●I cannot deal with mold traps in lunchboxes — wide openings and dishwasher-safe construction are non-negotiable for me.
●I cannot deal with mold traps in lunchboxes — wide openings and dishwasher-safe construction are non-negotiable for me.
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If my kid can't open their lunchbox, they won't eat — child-independent latches matter more than adults realize.
If my kid can't open their lunchbox, they won't eat — child-independent latches matter more than adults realize.
A $40 stainless lunchbox that lasts 5 years is better value than a $10 plastic one you replace every year.
A $40 stainless lunchbox that lasts 5 years is better value than a $10 plastic one you replace every year.
●Lunchboxes take abuse — drops, slams, and daily washing. The hinges and seals are what fail first.
●Lunchboxes take abuse — drops, slams, and daily washing. The hinges and seals are what fail first.
Dimensions matter — a lunchbox that doesn't fit the school bag isn't a real option.
Dimensions matter — a lunchbox that doesn't fit the school bag isn't a real option.
Replacement parts availability is how I know a brand stands behind their product long-term.
Replacement parts availability is how I know a brand stands behind their product long-term.
