This rug used traditional motifs inspired by architectural motifs and tiles. Designers were further inspired by the poets (Rumi, Hafez, Attar), nature, and religious-spiritual intimations that are deeply ingrained in the culture. In contemporary items the palette has become more pastel, utilizing the technical perfection and artistic flair of this "city of art". Both classical and contemporary Isfahan's rugs are extremely attractive particularly the elimination of strong reds, which makes them more compatible with Western decorative schemes. Wool is a natural textile fiber and one of the most sought-after materials for rug making. Wool rugs are highly durable and perfectly capable of resisting the wear and tear of everyday use. Wool has a naturally dirt-repelling effect and is easy to keep clean. It is also flame resistant and characteristically retains its shape so that the pile of the rug always rises.