Yes. Just be sure that you find a lunch box that will fit the Bento Box you will be using to pack lunches. While some Bento Boxes come with ice packs, most do not come with handles to carry it around. Also, putting a Bento Box inside of a lunch bag will prevent lunch from ruining the backpack and school materials if the Bento Box were to accidentally leak. These are just a few reasons why I recommend putting a Bento Box in a lunch bag.