Permafrost is an Epic Fortnite Harvesting Tool from the Harbinger set. Permafrost was available via the Battle Pass during Season 5 and could be unlocked at Tier 100.
How-to Get the Permafrost Harvesting Tool
Permafrost is part of Season 5. If that season is still currently in the game, you can obtain this item by purchasing and/or leveling up your Battle Pass.
Permafrost is part of the Harbinger set! You can find all of the items that belong to it below.