They will double it for the old. This reduces the intensity of the colors and creates a song between the colors of the rug, and the colors are artificially transparent and the surface of the rug is lit. Materials that are used to double the rug are known among rugs called Doa, in principle, if the rug is derived from healthy raw materials and is woven with an interesting plan and instrument of skilled workers, it is usually obsolete rugs that are woven with canonical or synthetic fibers.