Cook Pro Set of 12 Storage Container Set Click and lock lids provide an air tight and water tight seal Containers nest for easy storage. 12 covered containers including the following sizes: 3 Squares (6.5oz, 15oz, 34oz), 3 Round (7.5oz, 17oz, 34oz), 6 rectangular (7.5 oz, 17 oz, 34oz, 37oz, 49oz, 74.5oz) Microwave safe (remove lid before microwaving) Dishwasher & freezer safe