The Tupperware MM round container set features four containers made of food grade plastic, which keeps your food free from chemicals for safe consumption. Plus, the plastic construction makes it durable and easy to maintain. The Tupperware round container set is sized to hold enough food yet takes up very less space on your kitchen shelf or storage counter. It has an airtight lid that makes it easy to preserve the freshness of food and store or carry solid food or store liquids such as shakes or juices too. With this Tupperware container, you do not even have to worry about the liquid spilling over.