These dishes are wonderful! Perfect size for leftovers or individual meals. They work great in a toaster oven 2 at a time. And, they stack beautifully in the fridge. BUT, I am hopeful these lids hold up. With my purchase of 3 dishes with lids, I also ordered an additional 6 Pyrex lids to replace defective lids from previous purchases of this product. The 3 to 4-year-old lids had turned brittle and broken apart. This seemed odd as I have many plastic containers, some 20 years old, with lids still intact. My old Pyrex lids were completely unusable. When I contacted Pyrex, I received no response.