The Fox Cloak is made of two items that were originally available during the April Fool's Day event in the store. It is made up of the cape draping over the back and the hood going around the back and sides of the head.
There are two other cloaks from the animal cloak series: the Bear Cloak and the Wolf Cloak.
Fox Hood accessory
Fox Cape accessory
Front-view of both accessiores
Back-view of both accessiores