Never used Tupperware Fridge Stackable and 3 Stuffables Storage Containers. Fridge Stackable: Save space and keep all kinds of foods fresh. Simply stack the trays and apply the cover and you have a convenient storage unit for sandwich or salad fixings. You'll also find the trays ideal for storing leftovers, hot dogs, even pizza. Used separately with the a cover, a single tray is perfect for bringing a salad to work. The cover makes a great sandwich plate. Stuffables Storage Containers: These versatile storage solutions take the guesswork out of knowing which container to use. That's because each container features a flexible seal that expands to accommodate a variety of foods, including odd shaped foods that may slightly exceed the height of the container. Included in this set are 2 Stuffables, each 2 cups and 1 Stuffable, 1 cup. I've had these items in storage, but they have never been used.