Item from Goblet of Fire by J.K. Rowling
Harry's silvery Invisibility Cloak, inherited from his father — used this year for midnight visits to the Prefects' bathroom, sneaking to see Hagrid, and navigating a castle full of foreign visitors and Rita Skeeter's beetle.
Also known as: the Invisibility Cloak, Invisibility Cloak, the Cloak, Harry's cloak