A Scottish MP celebrates making period products freely available. A father admits embarrassment at buying pads for his daughter. A Jewish grandmother describes getting her first period in front of Nazi soldiers. A trans woman, a trans man and a non-binary person share their stories. And a marathon runner makes crimson waves. From the first red flag to the last goodbye, from Indigenous rites to medical frontiers, from miscarriages to menopause, from pain to pride, from ‘free bleeding’ in public to bleeding behind bars – the underwear, the oversight, period poverty and protests – ‘Our Red Book’ takes us to every corner of the globe and every voice yet unheard.