Long jacket in Fil Lumière. Ties at the waist with a Fil Lumière ribbon. Maison Montagut has designed Black Light, a stylish and elegant range made with Fil Lumière, the brand's iconic material, which is available in a single colour: black. The material creates a deep, silky shade of black for an evening wear effect. If you love this, you'll also love the Margot tunic and the Marlene long jacket.