I have been purchasing these earrings for a few months for my 7 year old daughter.  She really loved them, and when she would lose one - it was not a problem.  This week one of the earrings went through one of the pierced ear holes. It caused her a lot of pain and tramatic doctors vist.  I spoke to another parent and they had the same thing to happen with thier daughter and the same type earring.  I would recommend the hypoallerginic post, but not this size earring because it is to close to the size of a pierced ear hole.