Rubbermaid Easy Find Lid Glass Food Storage Container, 5-1/2 Cup Pack of 2 Sleek, crystal clear, tempered glass is safe for microwave and oven use and looks great on the table. Features the easy-find lids organization system - lids snap to the bottom of the container and to each other. Bases and lids neatly nest inside each other for compact organization in your cabinets. A built-in gasket creates a leak proof seal to keep foods fresher, longer. Oven, microwave, dishwasher, and freezer safe. Made in the USA