Shimmering black Knightsbridge thongs from Gilda & Pearl. Underwear and lingerie must be tried on over your own garments. POSITIVELY CONSCIOUS: Gilda & Pearl scores 3 out 5 by independent ethical brand rating agency Good On You. It has a good animal rating and does not use fur, leather, wool, down, exotic animal skin or angora. It traces most of its supply chain manufactures locally to reduce its carbon footprint.