Willow Pump Wearable Breast Pump New Willow Go™ Hands Free, Cord Free Double Electric Breast Pump Discreet and Quiet in Bra Design 21mm and 24mm Flange, Clear. Designed with the highest capacity of any in-bra pump, Willow Go prioritizes comfort and convenience. With hospital-grade suction and a 100% comfort rating, Willow Go pumps quietly and discreetly (no dangling tubes, bottles, or external motors) so you can do it all without sacrificing efficiency or capacity. It’s also app-connected, making it easy to control your pumps, connect with experts for personalized guidance, and access research-backed content with a tap. Power. Convenience. Control. It’s your reason to cut the cords once and for all.