Sheep Pils Sand Valley Polyester Carpet is a 24-ounce product. Carpet warms up a room and reduces energy bills with the natural insulation of the carpet. Polyester carpeting is inherently stain resistant. When it comes to stains it outperforms both nylon and wool. Additionally, polyester carpeting is very soft and significantly less expensive than either nylon or wool. Because of the price advantage, we will tend to see polyester used in newly built homes. You will also see it in existing homes going on the market. Previously polyester carpets had poor resiliency and tended to crush under heavy traffic areas. Well, not anymore. Through the years technology has improved the performance of polyester carpets. It is much more durable than the old generations of polyester. Also, polyester comes in much more vibrant colors.