The containers are microwave-, dishwasher-, and freezer-safe. Includes three containers and matching lids.Promising Review: “I was looking for good, microwavable cookware, and found it in this product. I use them almost every day, and they’ve held up very well. The lids don't shrink in the dishwasher or from the heat of the microwave. Plus, the lid has a vent, which is a great added feature." –Annie G.Get the six-piece set from Amazon for $13.99 (available in 12 colors).