Truly an excellent product. No complaints. Lids stayed tight, containers cleaned easily and thoroughly (no stains!), and the stacking with the lids really works as well as you see on television. I used my containers for cucumber sauce, leftover cacciatore, gazpacho, storing grape tomatoes, for leftovers, even for washed lettuce. Went easily from fridge to microwave to dishwasher. Great sizes, too. The smallest ones were great for storing a bit of leftover sauce, and the next size up is actually much larger than it appears. I only wish I had more of them so I could throw out every other container in my cupboard. Five stars all the way.