Adventurer's Belt

Source
It has an increased chance to drop from Nefarian in Blackwing Lair.

Removed sources
Other raid bosses that previously had a chance to drop this item included Gahz'ranka, Lord Kazzak, Onyxia, and Highlord Kruul.

Appearance
This item shares its appearance with Belt of the Den Watcher and Valorous Girdle.

There are also a few items with similar appearances:
 * Red: Gothic Plate Girdle, Frostwolf Plate Belt
 * Green: Traveler's Belt, Heavy Lamellar Girdle
 * White: Alabaster Plate Girdle, Stonewall Girdle