Tupperware Vent N Serve 7 pc Set Nocturnal Blue In Nocturnal Blue Set includes 1-cup/400 mL Round, 2-cup/600 mL Round, 2-cup/600 mL Medium Shallow, 3-cup/800 mL Round, 4-cup/ 1 L Medium, 6-cup/1.4 L Large Shallow and 6-cup/1.5 L Medium Deep Containers The unique venting system allows steam to escape when reheating foods in the microwave The footed bases ensure even reheating while handles stay cool to the touch.