The 6 piece microwave container set is perfect for microwaving storage or freezing. It contains a 16 oz 28oz and a 40oz container. They are microwave dishwasher and free safe. They all have sealing lids that have an adjustable knob in the top.Microwave safe.Dishwasher safe.Freezer Safe.Adjustable steamer vent.Set - 40oz 28oz 16 oz.Color - Gray.