For me, using these lids is a small change since I was raised using plates as lids for leftovers in the fridge. But I like these blue guys. Sometimes it is difficult to get them on as my fingers don’t work the way they used to years ago, and sometimes the sizes, as varied as they are, don’t quite fit the container so well, but these are small quibbles indeed. They truly act as wonderful substitutes for plastic and the tightness of the fit is a good thing if leftover containers gets jostled or kn...