"You have to wear it for a few minutes first," he says, and demonstrates by swinging his own around his shoulders, "and it sort of gets to know you? And then you tell it what word you want to use to make it work, and then whenever you say that word --"

He spreads the cloak wide with both hands, grinning. "It turns into wings. For like an hour. And then after that it needs to rest for about a day before you can do it again."