I wish i had a photo of this, but on a news clip they showed an IDF soldier wearing some large (very large) floppy hat, what the hell are thoose things ? , maybe someone has a photo ?

found a photo, but the one i saw was even larger, I assume they are either camo, or are ment to break up the head outline ?

http://story.news.yahoo.com/news?tmpl=story&u=/020405/168/1cv8w.html

rogerb-
This site offers an explanation:
http://www.isayeret.com/gear/camo/helmetcover.htm

Thanks ed1 that was a great link., i see i guessed right, boy effective or not, they do look like oversized camo shower caps.