Elvie Double Smart Electric Breast Pump is small, lightweight, and quiet, allowing mothers to pump freely anywhere—at home, work, or on the go. It features innovative technology that minimizes noise, ensuring a peaceful pumping experience. Its wearable design fits inside a nursing bra, making it completely hands-free. It is easy to use and clean, with only five parts that can be assembled in seconds—no cords, no outfit changes, no hassle. It connects to the Elvie app to monitor milk volume in real time, track pumping history, and control the pump remotely. It also operates intelligently, automatically switching from stimulation to expression mode when milk starts to flow and pausing when the bottle is full. What's in the box: 2 hubs, 4 bottles (150ml, BPA-free), 4 breast shields (24mm & 28mm), 4 valves, 4 spouts, 4 storage lids, 4 seals, 4 bra adjusters, 2 USB charging cables, and 2 carry bags.