With the plethora of conspiracy theories floating around, perhaps you need a tinfoil hat to prevent mind control by governments, spies, or paranormal beings that employ ESP or the microwave auditory effect. While these hats might or might not offer this kind of protection, they at least are more fashionable than the proverbial tin foil hat which resembles a dunce cap.
I tested the hats ability to block electromagnetic signals to my phone but they failed, mainly because the phone was larger than the hats, but it is likely that the thickness of the aluminium was not sufficient.
