The Cloak of Invisibility is a fictional item often found in literature and film, most notably in the Harry Potter series. It is a magical garment that renders the wearer invisible to the naked eye, allowing them to move undetected in various environments. In folklore and mythology, similar concepts appear, such as the Invisibility Cloak in Greek mythology or the Ring of Gyges. These stories explore themes of power, secrecy, and the moral implications of being unseen, highlighting the allure and potential consequences of invisibility.