The VERSAtainer Microwaveable Containers are offered in square, rectangular, Round and oval. The contoured walls of these containers make stacking a breeze. Choose from several standard sizes ranging from 6 to 58 ounces that feature one, two and three compartment feature one, two and three compartment configurations. Clear lids simplify product identification product identification, enhance presentation and feature the patented lock tight lid system to help prevent leakage. These remarkable containers easily go from refrigerator to microwave to dishwasher.