Simba: The King Lion S01 E28 The Magic Mantle

Simba and his loyal friends decide to leave for the jungle, but before he sets out, the Queen of Ants sends him a message that Shere Khan is on the warpath. To help Simba reach the jungle and escape the ferocious tiger, Arbor, the King of Trees, gives him a magnificent red cloak that has the power to make the wearer invisible. The cloak can only be worn by a king.