This is a lunch box created in collaboration with food stylist Maki Watanabe and CLASKA Gallery & Shop "DO." It's made of nostalgic, matte aluminum. The shape is a very simple and gentle oval. It's very light, and the feel in your hand is smooth and mellow. The numbers on the lid match the numbers assigned to each recipe in Watanabe's book, "Salvia Kyushoku-shitsu no Youji no Obento" (Children's Lunchboxes from the Salvia Cafeteria) published by Bunka Publishing Bureau. These cute numbers are actually handwritten by Watanabe's son. Size: S size, outer dimensions 15cm x 10cm x 3.5cm Material: Aluminum Includes one divider to separate food. *Although there is no inner lid, there were no problems if you didn't put in anything with liquid. This item was used for a kindergartener and stored at home. Please check the photos for dents, scratches, and stains that cannot be removed. It will be sent via anonymous delivery, Yu-packet Post Mini.