This 14-piece storage set consists of seven round glass bowls: one large seven-cup; two medium-size four-cup; and four handy two-cup (great for lunches). Each has its own seal-tight, blue plastic lid. Incredibly durable as long as sudden changes in temperature are avoided, Pyrex glassware is safe for the oven, microwave, freezer, refrigerator, and dishwasher, and even looks good serving at the table. Please avoid using the lids in the microwave and oven, and wash by hand or on the dishwasher's top rack. Pyrex covers the glass bowls with a two-year warranty, and the lids with a one-year warranty. Pyrex glass is made in the USA. --Ann Bieri