Comfort matters. 

Find your fit.


Too tight is a no-go when you're in full flow. To find your perfect fit, measure your hips at the widest point and compare to the International sizing guide below.


Period Undies sizing chart graphic form Wunderthings - leak-proof Incontinence and menstrual underwear sustainably made from recycled ocean waste.


Now let's go shopping >

What makes our period undies so wunderful?