The pump comes with two  milk collector cups (24mm flange size) with tubing and adapter as will as two 19 mm silicone inserts. Each cup holds up to 6 oz and effortlessly fits in your bra, eliminating the need for holding traditional pump flanges and freeing up your hands for other tasks. What’s more, the Ardo Alyssa hands-free is the world’s only breast pump to feature an automatic Power Pumping function that mimics cluster feeding, which is shown to increase milk supply. In addition, the Ardo Alyssa Hands-Free Memory Plus function allows you to save your pumping session, including settings, pump time, and stimulation/let down selection.  Thanks to its high cycles and vacuum, Ardo Alyssa Hands-Free is the world’s first Personal NICU Pump for mothers of preemie babies.  With its integrated battery, Ardo Alyssa Hands-Free gives breast pumpers the flexibility to pump anywhere, anytime, for 8 pump sessions.