Wear-Dated offers a range of carpet fibers that are made from recycled content including Wear-Dated Renew and Wear-Dated Renew Natural Nylon. The Renew Natural Nylon fiber is constructed using a proprietary technology that binds fibers together so they cannot be untwisted. The  result is better resistance and a wool-like luster and texture, according to the company. For details, circle 164 on the Reader Inquiry Card.