Munificent Bracers

Munificent Bracers is a token that is used to create a Wrist-slot armor suitable for a character's armor class.

Source
This item is a reward from the garrison mission Burning Legion Vanguard.

Created items
The Munificent Bracers will create one of the following, based on your class's armor type:
 * Bracers of Falling Leaves (leather)
 * Bracers of Grievous Storms (plate)
 * Bracers of Hooded Nightmares (cloth)
 * Element-Binder Bracers (mail)