This pump is specially designed to collect the leaking milk while nursing on the other side. It pumps out the milk from your breast by natural pressure. It is more gentle and pleasurable than using an electronic pump that may hurt your nipples by strong suction.Your baby deserves to have a quiet moment instead of the noisy motor sound while nursing.Built-in soft & Eco-friendly petal-shaped silicone, trumpet fits more tightly and does not leak, which makes sucking thoroughly and comfortable. This compact pump is perfect for flight trips, hiking, family BBQ, fishing, camping,0. 0or other outdoor activities. You do not have to worry about running out of batteries or breaking the pump accidentally on traveling.