AssassinsVeil
From Exalted - Unofficial Wiki
Assassin’s Veil (Artifact 2) This filmy black veil, attached to a thin black chain worn like a crown, mutes every sound made by its wearer, blanketing his movements with the silence of the dead. While wearing the veil a clever thief could run across a floor covered in silver bells without making a sound. Add two dice to all Stealth rolls and negate any penalties due to noisy surfaces and sounds made by the wearer.