Purple Storage Microwavable Freezer Safe Container Set Microwave, freezer, and dishwasher safe BPA free polypropylene Sizes stack inside each other for compact storage Clear lids to view contents, knob to open a vent for steam during microwaving Approx. sizes: 5" square (0.75 quart), 6" square (1 quart), and 7.5" square (1.25 quart)