It has become uneasy to store lunch boxes packed in the morning at room temperature until noon. Do you take measures such as using a cold bag?
At the 100-yen shop Can Do, I found a "cold lunch cloth" that wasn't a cold bag. It is a bento wrapping that uses an aluminum film with excellent heat insulation for the lining.
The size is 35 x 35 cm. In addition to the navy color in the image, there was also red. Both patterns are gingham check.
Needless to say, how to use it. Place the lunch box in the center of the unfolded lunch cloth, fold it in the order of left and right edges → bottom edge → top edge, and fix it through the rubber band attached to the top edge. If you put an ice pack on the lunch box, the cold insulation power will be further improved.
It can be used as a place mat when eating, and can be folded compactly when not in use. If you bring your lunch in a disposable container, you can significantly reduce the bulk of your luggage on your way home.
It would be better to prepare a cold storage bag for lunch, but it is troublesome to have it separately from the main bag ... Recommended item for such people. It can also be used as a temporary wrap when you buy ice cream at a convenience store on your way home.