DESC: The first breast pump to combine all the features that can improve milk production: infinitely variable control, let-down massage cushion and effective double pumping Electronic memory learns your personal pumping rhythm for precise control The Let-Down Massage Cushion gently stimulates the area around your breast and the petal massage and hospital-grade vacuum make pumping easy and efficient DUO works with the Philips AVENT Natural Feeding System, so you can express and store milk into any AVENT bottle or cup Includes 2 - 4 oz Philips AVENT BPA-Free Natural Feeding Bottles, 2 - 9 oz BPA-Free Breast Milk Storage Containers, 2 Thinsulate storage bags, 4 cooling gel packs, an electric adaptor and power cord