I love that this item has so many pieces. However I noticed in one of the reviews that they said that the lids were tight. I didn't realize how tight they are because they are easy to split. See the picture. I am disappointed because I've only used these one time and it's already damaged period on a good note even with top big split it still holds tightly to the bowl. I make baby food for my granddaughter and freeze it. So these lidded bowls are great to slowly thaw her food in the fridge. Unfortunately I'm going to have to return it. As you can see from the picture the lid is almost completely split and I don't think it will hold up much longer. Nice concept but I guess I'm going to have to go back to the drawing board.