Anybody know the diff between earbuds and wonderbacks?

[Butterfly]

I am pleased in a way to find out that I am not the only one who had encountered problems with the wonderbacks
. What is the point of making them if you cannot find earrings to wear them with. It has been a waste of money to me.

[Gemsnob]

I am pleased in a way to find out that I am not the only one who had encountered problems with the wonderbacks
. What is the point of making them if you cannot find earrings to wear them with. It has been a waste of money to me.

I havent tried them on any other earrings yet but most of the earrings came from Shoplc so I thought they would fit. It never occurred to me that posts came in more than one size.