Chella Quint is a writer, performer, and designer, born in Brooklyn, New York, and now based in Sheffield, England. She studied at NYU Tisch School of Arts before moving to the UK for grad school. While teaching middle school drama and health, she started using humor and joy to challenge attitudes to periods through her show, Adventures in Menstruating. She became a leading expert on menstruation in the UK, advising on regional and national policy on menstruation education and period poverty. Chella writes, performs, and designs interactive projects inspired by science, health, and social justice. Chella coined the phrase "period positive" in 2006 and started the Period Positive movement to improve menstrual literacy. She created the Period Positive Pledge as a framework to help others develop inclusive menstruation policy and outreach. www.periodpositive.com

Giovana Medeiros is a Brazilian illustrator, based in Lisbon, Portugal. She graduated in Fashion Design at SENAI/Criciúma, Brazil, and went to Dublin to study a Higher National Diploma at BCFE. Giovana's work focuses mainly on children's illustration, but has also been applied to a series of different mediums such as books, magazines, textiles, advertising, games, and apps. She works mainly digitally, but in her spare time likes to explore traditional painting with watercolor and gouache. Her main inspirations come from nature, women, daily life, literature, and her travels.