I'm not sure about that one??? I was just planning on using it for feeding actually. I don't think it would be the sort of thing that you would leave them to sit in all day, i know I have seen them used at ds's creche when i have been in bfeeding him, they use them for bubs that cannot sit on their own yet. They sit them in front of a mirror while they are getting their bottle ready or whatever, and the bubs love it, but it would only be for say 5 minutes at a time.! Anyone else have an opinion?