Have you tried equipping one?
At +4 it's almost better than every other hat and it has a slot.
Its a slotted hat, with no stats, and a graffiti skill at +9. That is equivalent to saying a muffler is the best garment at +4. I suggest you look at your actual def number on char sheet with it. (fyi each upgrade is only worth 2/3 def from gear).
Alot of hats are slotted and have low def, some even have stats. Please let me know how you are deciding this, considering the multitude of hats with equivalent def, slots, and stats.
Edited by Adamage, 09 July 2014 - 07:51 AM.