DD was over at a friend's house yesterday and was drinking from one of those cups with the double sides which have water and glitter actually inside the cup walls. When she finished I noticed that there was very little liquid inside the walls - that it must have leaked at some point. Not sure whether this was before she drank her drink (I didn't check but it wasn't a new cup) or during.
Checked the apple juice in the cup and there was no glitter in it and I couldn't see any in her mouth (although the glitter bits were probably too small to get through any leaking point that was there) She seems fine, no tummy aches etc. Just wondered if anyone knows anything about these cups and what is in them and is it likely to cause problems?