The shemagh description states it helps insulate against both hot and cold weather, but putting it on increases the pawns minimum comfortable temperature (so they are less tolerant to cold).
The description of the cold insulation stat (on the shemagh itself) says higher numbers of cold insulation allow surviving in colder climate, but the shemagh has a negative cold insulation value, so it has the opposite effect of what the gear describes.
The shemagh description states it helps insulate against both hot and cold weather, but putting it on increases the pawns minimum comfortable temperature (so they are less tolerant to cold).
The description of the cold insulation stat (on the shemagh itself) says higher numbers of cold insulation allow surviving in colder climate, but the shemagh has a negative cold insulation value, so it has the opposite effect of what the gear describes.