Chella Quint is a designer, writer, performer and one of the UK's top experts on menstruation education. Brooklyn-born and now based in Sheffield, she is the founder of the Period Positive movement, an initiative challenging taboos and fighting period poverty, and advises governments on menstruation-inclusive policy through the Period Positive Pledge. Chella has appeared in national print media and on radio and worked with charities such as Plan UK and WaterAid. A founding member of the Menstruation Research Network and a member of the Society for Menstrual Cycle Research, she is currently researching a PhD.Dr Shehnaaz Jivraj (medical consultant) is a consultant obstetrician and gynaecologist at the Jessop Wing of Sheffield Teaching Hospitals, and a consultant at Yorkshire Fertility and Menopause Solutions. She holds a position as honorary senior lecturer at the University of Sheffield and has authored several papers and book chapters on the subject of female reproductive health.