The Sun Sprout backpack is an Uncommon Fortnite backpack. Sun Sprout was available via the Item Shop for 200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Sun Sprout Backpack Details
Perfectly sunny.
Fortnite Sun Sprout Backpack PNG Images
Here is the PNG images of Sun Sprout below!