Discover more about Textile Exchange’s Fiber Challenges below. The 2025 Sustainable Cotton Challenge (2025 SCC) serves as a cornerstone for change in the apparel and textile industry by encouraging brands and retailers to commit to source 100 percent of their cotton from the most sustainable sources by the year 2025. The 2025 Recycled Polyester Challenge serves as an important catalyst for change in the apparel and textile industry. We are challenging the apparel industry to commit to bringing the percentage of recycled polyester up from 14% to 45% at 17.1 million metric tons by 2025. The Challenge will continue the successful acceleration that began with Textile Exchange’s 2017 Recycled Polyester Commitment.