Circular fibers and yarns are critical to designing for circularity; thus enabling brands, innovators and manufacturers to design for the scale of safer, cleaner fibers that build a more resilient fashion industry. Fashion Positive, in collaboration with multiple industry stakeholders, has developed the first-ever circular materials guidelines for cellulosic and plant based fibers. In this session, we will explore how these guidelines will both help to create coherence and a path toward action, innovation and systems change, as well as how they are a critical tool to help the industry collaborate vertically and horizontally, and to actualize circularity beyond commitments.