I really love this container, mainly because it helps save space in my freezer for freezing my milk, but I do have two complaints about it:
1) I wish there was a measure line on the trays to know exactly where to fill it up to, because the instructions say 2/3 of the way up the tray, but a line would be super helpful, rather than guessing what 2/3 actually looks like; and
2) I wish there was an easier way to lower the trays into the container once they're filled. I have to awkwardly hold it with two fingers on the side to slide it down into the container for freezing.
Otherwise, this was a game changer for freezing my milk, and I wish I had bought it sooner.