The Invisibility Cloak is a strange and wonderful artefact that makes the wearer turn invisible when they put it on. These cloaks are very rare. Harry, however, is left an Invisibility Cloak by his father as a family heirloom. Harry quickly discovers the joys of the cloak - now he can sneak about Hogwarts undetected! But the cloak should be used sensibly - it only stops you from being seen, not from being heard.