The Doublecross skin is an Rare Fortnite outfit. Doublecross was available via the Item Shop for 1200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Doublecross Outfit Details
Never turn your back.
Fortnite Doublecross Outfit PNG Images
Here is the PNG images of Doublecross below!