Sidewayfarer is a Rare Fortnite Wrap. Sidewayfarer was available via the Battle Pass during Season 18 and could be unlocked on Page 2 and costs 5 Battle Stars.
How-to Get the Sidewayfarer Wrap
Sidewayfarer is part of Season 18. If that season is still currently in the game, you can obtain this item by purchasing and/or leveling up your Battle Pass.