Heavy flow: are period pants the revolutionary solution to an age old problem?

Tampons, towels and the occasional menstrual cup are the go-to products for women seeking to manage their period. But knickers with a waterproof layer could be the answer for everything from pelvic floor weakness to unusually heavy periodsPolice officer Kirsty Kerr would rather not remember the day she can’t forget: when she wore a black and cream skirt to work.Kerr, from Glasgow, has endometriosis, a painful disorder of the uterus thought to affect 10% of women worldwide. Since she was 10