Castilla is a blend of shrink polyester and polypropylene, machine-made in Turkey. It''s tightly packed fibers with a captivating shimmering sheen create for both density in touch and shine in appearance. The soft beiges, Grays, and blues make these rugs the perfect complement to neutral settings. The sheen across the surface gives the designs and colors different appearances depending on the angle upon which the rug is looked at.