I did not know how much I was going to love these when I ordered them. I had had a heavier set previously and they didn't fit as well as these. There is a size to fit almost anything I have. I have one now on a drink the the frig that I couldn't finish, and now I don't have to worry about it spilling. I also tried one of the lids on a dixie type paper bowl and it fit great. No more wrestling with plastic wrap. And, these are reusable.