Robe of the Neutral Archmagi

Robes of the Neutral Archmagi offer protection from magical attacks and physical ones, making them the ideal armor for mages. These ones can only be worn by characters of a neutral alignment.

In-game description
"This powerful Mage Robe offers protection from all forms of physical attacks while at the same time increasing one's magical resistance and saving throws. Due to the nature of its enchantment, it can only be worn by mages of neutral alignment."