NOTE complements SIR and SIGNOR as an upholstery or heavyweight drape. 1300 denier effect yarn, which is particularly strong, is used on the loom. It undergoes a double colouration process: first to dye the polyester yarn, and then to dye the viscose. This complex process gives a refined, dual-colour effect that is responsible for the elegant movement of the design and contrasts with a compact natural yarn in both the warp and the weft.