After testing out almost every Breastpump on the market I feel obligated to give you all an honest opinion! This is the Willow Go pump and it’s one of my favorite wearables!! I don’t know how they designed a little pump to be so efficient at removing milk but they have! They come with 5oz cups but you can also upgrade to the 7oz ones! This pump is amazing! pumpingmom wearablepump breastfeesing