1.5Qt & 2.5Qt round glass and plastic lids; 16oz round. Use in oven microwave refrigerator and freezer . CorningWare material resists chipping and cracking. Glass & plastic lids simplify cooking serving and storage. Dishwasher safe durable non-porous glass.1.5Qt & 2.5Qt round glass and plastic lids; 16oz roundUse in oven microwave refrigerator and freezer CorningWare material resists chipping and crackingGlass & plastic lids simplify cooking serving and storageDishwasher safe durable non-porous glass