The Kids Thermoses I Tested
The [Thermos Funtainer 10 oz Food Jar](https://www.amazon.com/s?k=Thermos+Funtainer+10+oz+Food+Jar&tag=thetestedhub-20) was the most reliable. Five hours of hot held at over 150 degrees and the wide mouth made it easy for my second grader to scoop with a spoon.
Check price on Amazon →I packed five kids thermoses with hot soup and cold milk every school day for a month to find which ones survive lunchbox abuse and still seal.
Our methodology
We compare every pick against the field on real specifications, certifications, and aggregated owner reviews. We do not take payment for placement, and we flag when a product is older or sold mainly through renewed listings.
Side by side
| Pick | Best for | Score | |
|---|---|---|---|
| The Kids Thermoses I Tested | Check price |
The full reviews
The Kids Thermoses I Tested
The [Thermos Funtainer 10 oz Food Jar](https://www.amazon.com/s?k=Thermos+Funtainer+10+oz+Food+Jar&tag=thetestedhub-20) was the most reliable. Five hours of hot held at over 150 degrees and the wide mouth made it easy for my second grader to scoop with a spoon.
Frequently asked
Aim for at least four hours above 140 degrees so a 7 am pack is still safe by noon. The best models I compared held over five hours easily.
Some are. I still hand wash the lids because the silicone seals can degrade in hot dishwashers. The stainless body usually survives the top rack fine.
