These glass bowl with snap on lids help to keep cooks organized by letting them partially prepare a meal in advance, which is essential when entertaining. Vegetables can be chopped, meats can be marinated and sauces blended a day or two early, covered and then stored in the refrigerator. Duralex Freshbox Round Bowls with Lids are truly a must have for every kitchen. Glass bowls are a kitchen essential. Microwave safe bowls with snap-on lids make these bowls indispensable. The bowls nest for storage and are dishwasher safe.