How a Shenzhen startup built the world's best-selling wearable breast pump, then turned one gadget into a whole aisle of motherhood.
Willow Innovations is a U.S. femtech company that invented the first all-in-one, in-bra wearable breast pump, freeing new mothers from cords, tubes and the pumping room. Founded in 2014 out of Josh Makower's ExploraMed incubator, Willow now sells app-controlled, leak-proof pumps (Willow 360, Willow Go, Willow Sync and the manual Willow Wave) along with a growing line of feeding and postpartum accessories. In 2025 it acquired UK rival Elvie to build a scaled maternal-health platform.