This is a three-tiered food container for Osechi Ryori (New Year's food) that I purchased. Overall size: Approximately 24x24x18cm The depth of the inside of each tier is about 3cm. There are 9 plastic dividers for 2 tiers. The materials are likely plastic, thin board, and cardboard. I washed it and wiped it with disinfectant wipes. Thank you.