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Lots of people get periods: about half the world’s population, in fact. Why, then, do we still treat them like they’re dirty and gross? One designer wants to change that, so she created the Period Coloring Book to challenge the stigma and get people talking about menstruation.

Andrea Yip is a designer and public health practitioner who works out of Toronto and New York City. She created the 30-page coloring book as a playful guide to the “lived experiences” of people with periods.

Yip told TeenVogue:

Yip launched the IndieGoGo campaign for the coloring book Wednesday. She plans to send out the first copies of the book in March 2017.