I love this set! As other reviewers said, it doesn't always stay latched, but I just use a rubber band, and I keep it in a little zip lock bag with my paper towel sheets, extra brushes, watercolor paper, etc. and it makes a nice little "kit" that way, so I'm very happy with it. I've never had a problem with it leaking, but I don't close it when it's very wet. I love that it has two cups for water, so I can keep one clean to paint with and use the other to clean my brush, and it has lots of mixing space. I even use it in my studio sometimes rather than getting my tubes out for small paintings.