I received 2 sets of this product at the same time. 2 bowls (out of 14) where already chipped and one of them having default in the body of the glass. I kept the sets because I was too lazy to take the info to return the merchandise... Also, the lids seemed not to fit but with a bit of practice they do. Be carefull because the glass containers are more slippery than other type. One of my containers just flew away (before to dye on the floor) while trying to fit the lid the first time... So be carefull when you try to put the lids on. In general, the sizes are practical. Now I just froze tomato sauce in all of them but they would be usefull for lunches and many other things (melons, left over, etc.). I definitely prefer glass toward plastic.