These are great for soups, chili or stews. They are water tight but not completely leak proof. My lunch bag went flying in my car when I had to stop suddenly and the bag landed upside down. A little soup leaked from the top steam vent, but it wasn’t much for the amount time it was upside down. I also like how easy they clean up
I bought three. Shared one with my daughter and the other with a friend. We all love them. Co workers are asking where they can get one. Easy to use, clean and store. If they come around again I would buy more for gifts.