The NEW Tupperware Vent 'N Serve Microwaveable 3-1/2 Cup Medium Round food container is an ideal on-the-go solution for leftovers or single meals prepared in advance. It goes from the microwave to the table to the fridge or freezer for leftovers. The lid has a unique venting system that allows steam to escape when reheating food in the microwave, leaving your microwave splatter-free. The footed base ensures even reheating while the handles stay cool to the touch. The see-through material allows you to see the food in the container. Save time in the kitchen - preserve, reheat and serve all in the same container, making clean up a breeze! Also make healthy meals in advance and use the Vent 'N Serve to portion, freeze and save for later when pressed for time. This container is new and still in the wrapping from Tupperware - only taken out for pictures. Made in the USA. The Tupperware numbers are 4152B-1 and 6437A-1.