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Home » School Lunchbox Containers & Supplies

Top Picks: Kids Lunch box with thermos

By Laura Fuentes Updated Jan 5, 2026

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A lunch box with a thermos can be very useful to pack a healthy lunch for school. It’s a great solution for both hot meals and cold foods.

Below are the top picks we’ve tested and liked, plus an explanation for why it makes it a top pick, depending on your child’s age and needs!

collage of kids lunchbox with thermos images

Which Lunch Box Keeps Food Hot?

To keep food hot, you’ll need a lunch box or container that is insulated, double-walled, and made of stainless steel. You can opt for an all-in-one design, like a lunch box with a built-in thermos, a kit with both a thermos and lunch box or a thermos container.

NOTE: A traditional lunch box made of plastic or stainless steel will not keep your child’s lunch hot, it needs to be made to keep foods hot (or cold).

Looking for only the thermos container?
Check out this post with our top thermos containers.

Best School Lunch Boxes with Thermoses

The options below are some of the best school lunch boxes with thermoses that are durable and help you pack a warm lunch for school. A thermos can also keep foods like yogurt cold until lunch.

All-in-One: Omie Box
The built-in thermos insert is perfect for sending your kids' favorite warm meals or cold foods (like yogurt) for school without worrying about ice packs or a separate container.
Remove it, and use that space for sandwiches, cold pasta salads, and more!
It's sturdy and high quality, so it will last! Hand wash only. Kinder – 2nd grade.
Available in 4 colors.
Find it on Amazon
Bento Box & 8oz Thermos
The food jar holds 1 cup, so this is ideal for younger kids: Pre-K – 1st grade.
Use it with or without the insulated container, which fits inside the bento box. It also comes with a lunch bag too.
Available in blue or pink in several themes.
Check it out on Amazon
Lunch Set & 10oz Food Jar
The food jar holds 1 ¼ cups, so this is ideal for kids between Kindergarten and 2nd grade.
The insulated container does not fit inside the bento box but both fit inside the lunch bag.
Available in blue or pink in several themes.
Check it out on Amazon
Keeps Cold, Warm, & Microwavable!
The most versatile way to send hot and cold meals and keep each of them at the right temperature!
Pack a salad or big meal in the largest one, soup or leftovers in the middle, and fruit or yogurt in the smallest… the possibilities are endless!
The containers keep food warm and are also microwavable.
Great for kids of all ages since they don't all have to be used at the same time.
Includes a carry bag (although I use my favorite lunch bag).
1pc, 3pc, or 4pc in 3 colors!
Check it out on Amazon
Ultimate Lunch Builder
Use 2 or all 4 containers to send hot meals to school. Perfect for all-day food packing and teens!
The containers keep food warm and are also microwavable.
Great for kids of all ages.
Includes a larger carry bag to fit up to 4 containers.
Available in 3 colors.
Check it out on Amazon
Thermos Only
The classic Thermos brand never goes out of style. Keeps food food for 5h hours and cold for 8.
Holds 10oz of food. Recommended for Kinder – 4th grade.
Available in 30 colors and characters.
Pick a color on Amazon
by Laura Fuentes
onJuly 30, 2023

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laura fuentes momables holding a lunch bag and lunch boxes

My name is Laura Fuentes
I’m here to help you simplify school lunches with fresh ideas your kids will actually eat.

Mom of 3. Certified in Integrative Nutrition. 5x Cookbook Author.

school lunch ideas! →

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