Retro Japanese Pattern Airtight Microwave Pack 4-Piece Set Food Storage Containers with Lids Japanese Tableware Kitchen Goods You can heat food in the microwave with the lids on. Highly airtight, it eliminates the need for plastic wrap and preserves food. This is a new, unused item. Thank you for your consideration. ● Package: 27.5 x 15 x 10 cm, 60 size, 1250g ● Diameter 12.8 cm, height 5.5 cm, capacity approx. 430ml pack (M) ● Diameter 9.8 cm, height 5.7 cm, capacity approx. 260ml pack (S) - 2 pieces each (2 patterns each) ● Body: Porcelain ● Lid: Polypropylene, thermoplastic elastomer