Carpentry Cape
Carpentry Cape is the mastery cape of Carpentry: only those who took that profession to level 100 wear it.
How to get it
Take Carpentry to level 100 and talk to Hollis, cabinetmaker: they give you the quest Mastery: Carpentry, and turning it in grants the cape. It is the only way to get it.
Who can use it
Any class can equip it.