Thirteen days before December 24, the Yule Lads children will leave their shoes by the window so that the Yule Lads can leave small gifts in their shoes. The Yule Lads are the sons of two trolls living in the Icelandic mountains. Each of the Yule Lads is known for a different kind of mischief (for example slamming doors, stealing meat, stealing milk or eating the candles). The Yule Lads traditionally wear early Icelandic wool clothing but are now known for the more recognizable red and white suit.