Mitznefet

Those strange, floppy "shower cap" helmet covers that IDF infantry wear were introduced in 2006 as a way to cut the contours of an ordinary helmet when seen by a sniper or other enemy soldier in urban as well as rural terrain. It’s said they were also a reaction to the Israeli use of new U.S. Kevlar helmets, which were too Nazi-like in appearance for the Israelis. Curiously enough the mitznefet, or "clown hat," as the cover is called in Hebrew, even has an ancient Jewish religious significance.