Keep your leftovers fresh using this 10 piece plastic food storage containers. They are made from safe durable plastics. You can use food saver containers to refrigerate leftovers or to use as your lunch box for work or school. Food grade containers have secure locking lids for easy travel and transportation. Kitchen containers set comes with 5 round containers: 12 oz, 22 oz, 37 oz, 56 oz, and 80 oz.