Rubbermaid Seal'n Saver, QT Round/4 Cups, Euro Blue, Sure-Grip Seal Provides Superior Protection Against Leaks & Spills, Flexible Rubber Rim On Lid Conforms Tightly To Container, Lids Are Easy To Peel Open, Even Out Of The Freezer & Retain Their Shape For Years, Clear Lids Allow Easy Viewing Of Contents, Top Rack Dishwasher Safe & Microwave Reheatable.