Chella Quint is a Brooklyn-born, Sheffield-based designer, writer, and performer. A former drama teacher and head of PSHE (Personal, Social, Health and Economics Education), Chella coined the phrase ‘period positive' in 2006 and founded #periodpositive to use humour and joy to challenge menstrual taboos, and find long-term solutions to period poverty.

She became a leading expert on menstruation education in the UK, advising on regional and national policy on menstruation education and period poverty. She created the Period Positive Pledge as a framework for developing menstruation-inclusive policy and outreach. Chella writes and performs solo shows, delivers public engagement projects and designs installations on themes inspired by science, health, taboo, product design and social justice.

Giovana Medeiros was born in the late 1980s in Criciuma, a city in the south of Brazil. She graduated in Fashion Design in her hometown, but later on pursued her dream and studied Illustration at BCFE in Dublin, where she lived for three years. She worked for several years creating print designs for apparel, but since 2011 has been dedicating herself to becoming a full time illustrator. Although her work is mostly focused on the children's universe, it has also been applied to a series of different mediums such as books, magazines, textiles, games and apps.