Highlights: •Resists stains and odors for a lifetime of clarity •Sleek, crystal clear, tempered glass is safe for microwave and oven use and looks great on the table •Flex & Seal lids are easy to seal and remove •Extreme durable polycarbonate •Lids snap to base bottom and to each other •One lid fits multiple bases •Base and lids nest inside each other. •Sleek, crystal clear, tempered glass is safe for microwave and oven use and looks great on the table •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. Use and care instructions:- •Rubbermaid Glass containers are safe for use in ovens up to 425°F and in microwaves without a browning element. They are not for stovetop, broiler or toaster oven use. Lids are not oven safe but are safe for microwave use and are BPA Free. •Glass products require the utmost care, especially when cooking foods at hot temperatures. Please be aware of the risks of cooking in glassware containers: Sudden temperature change may cause glass breakage; dropping or mishandling against a hard surface may cause glass breakage; handling hot containers may cause burning.