A Spectra-vestment is a protective garment used by the Sisters of Silence. Most often utilised by the Silent Sisters of an Excruciatus cadre, the bloody, crimson-coloured raiment of the Silent Judges and the silver cloaks of her more junior acolytes conceal sophisticated energy field generator technology that allows it to blur and shift to adapt to its surroundings or simply bleed shadow at will, concealing its wearer from sight should they wish and making them things of darkness rather than substance when viewed from a distance.
Sources[]
- The Horus Heresy - Book Seven: Inferno (Forge World Series) by Alan Bligh, pg. 255