Period-proof underwear that replaces pads & tampons
Functional underwear featuring three layer built-in tech to keep you fresh & dry all day, and a detachable option so you can change anywhere. For periods, leaks, and postpartum. Wear them for up to 12 hours, then rinse & reuse.
100% organic cotton menstrual products for businesses
Aunt Flow sells 100% organic cotton tampons and pads to businesses and schools, so they can offer them for free in bathrooms for employees and guests.
Changing the world, one cycle at a time.
Underwear for young people with periods
THINX (BTWN) are washable, reusable underwear designed with period-proof technology to help prevent leaks and stains. Each pair has been built with special fabric layers that can absorb liquid, wick away moisture, and deodorize. THINX (BTWN) come in smaller sizes and youthful styles, perfect for young people.