Masterclass Circularity Watch the replay of our masterclass about circularity in the apparel and automotive industry. You will gain practical tips and insights how you as a brand make the shift to circular. Past events: Masterclass ‘How to work with Zeology’ Watch a step-by-step lecture on how to work with Zeology and how to get optimal results. The Q&A is also available (pdf). Masterclass: Biodegradability of Leather From hide to shoe. How can leather stay biodegradable? Watch the replay of our online Masterclass.