Tormented Girdle

Tormented Girdle is a token that is used to create a Waist-slot armor suitable for a character's armor class.

Source
This item is a reward from the garrison mission The Best-Laid Plans....

Created items
The Tormented Girdle will create one of the following, based on your class's armor type:
 * Belt of Meditative Focus (mail)
 * Mantisweave Cord (cloth)
 * Salt-Scorched Girdle (plate)
 * Shadow-Gorged Belt (leather)