The Elvant Silicone Pump Wearable Milk Collector X Two by Medela is a double electric breast pump designed for comfortable and efficient pumping. With a closed system for safety, this Pump In Style model offers hospital-grade performance and easy use. The 21 mm and 24 mm sizes and battery operation make it convenient for use anywhere. Made in the United States, this white pump is designed to collect milk easily and effectively, allowing for more milk collection in less time.