Messrs Moony, Wormtail, Padfoot, and Prongs created and used the Marauder's Map to move around the castle and its grounds undetected. They used it mostly to help make Moony's warewolf transformations a little bit easier. Activated by the phrase: I solemnly swear that I am up to no good; the map would show them where every person was inside the castle and grounds. To deactivate the map all they must say is: mischief managed, and the map would turn back into a regular piece of parchment. This comfortable, soft 3 pack of ankle socks celebrates the Marauder's Map and its creators. Made of 70% Polyester / 20% Nylon /10% Spandex.