These glass bowls are suitable for even the most elegant meals, or the most casual. They will fit in on any occasion. They come in 5 stacking sizes: 31 ounces, 15, 12- 1/2, 7 -1/2, and 4 1/2 ounce sizes with matching snap down airtight plastic lids. These bowls can go from the microwave to the table to the dishwasher safely. Breakfastt, lunch, or dinner, these bowls will have constant use in your kitchen-5 convenient sizes Great for sauces, melted butter, leftover small quantities-easy to view contents They stack in the cupboard for easy storage-a custom fit lid for each bowl These bowls are made for heating, serving, dining, and storing your food Microwave and dishwasher safe- lids are air tight to keep foods fresh.