Esrog Foam

I know that this isn't a breaking development, but it still warrants mentioning: whoever decided to get rid of the hair and change to the foam for protecting the esrog, great job. The fact that they used that hair for so long makes no sense. It was annoying as hell and it didn't even seem to really protect the esrog at all. And it's not like foam wasn't invented until recently. Perhaps U-Boat can provide some insight into this query since he is in the biz.