“These guys did something that I thought was very innovative and inventive,” said Paul Blumenthal, a professor of obstetrics and gynecology at Stanford University and one of the authors of the editorial accompanying the paper. He was not a part of this study. “I remember reflecting to myself when this paper came through … ‘Oh my goodness, after all this time, we don’t have good data on menstrual pads or menstrual products and their capacities?’”

https://www.statnews.com/2023/08/07/period-products-menstrual-disc-new-study/