I am forever trying to find the right sized plastic bowl or save and then the lid to put any type of leftover away. These reusable elastic covers for staoring your food are perfect! All you have to do is get one that will stretch over the container, pan, bowl etc. that you are using, an dit is covered and safe. No more looking for the plastic storage container and the lid that fits it! It is food safe so there are no worries there either. Just wash them off and let them dry to reuse time and again! I love them! They have definitely made my life easier!