Aluminum silver lunch box, lightweight and convenient to carry. This lunch box is a suitable size for use from kindergarten to lower elementary school. I used it in rotation with other lunch boxes (thermos, plastic, bento boxes, etc.) for about 2 years. It has some scratches, but I took good care of it, so it can still be used. The rubber band in the image is not included. Adults can also use it as a lunch box for fruits or side dishes. - Size: Approximately 16cm x 11cm x 5cm - Material: Aluminum - Color: Silver Thank you for looking.