This is a paper-made jubako (tiered food box) that contained osechi (New Year's food). It was stored on a shelf after washing. Square Size: 17cm (length) x 17cm (width) x 16cm (height), all approximate. Rhombus Size: 17.5cm (diameter) x 17cm (height), all approximate. Paper-made 3-tier jubako Perfect for traditional Japanese cuisine. Rhombus Thank you for looking.