I bought the (contoured cup) medium noogleberry breast pump in December and I still can't get it to work. I know this is just a product but I am very frustrated that this is so terrible and does not do ANYTHING. I've tried all different kinds of positions to get some suction and it has worked like twice for a few seconds with loud burping sounds. This product is created for people who have a flat rib cage (which doesn't exist) because the cup always has huge gaps on the side of the breast (under the armpit) and towards the center of the chest. I was looking forward to this product so much. It's a huge waste of money and I need to return it if I can. I've tried different ways to prevent the large gaps such as yoga mat material (I cut my yoga mat for this and it still didn't work), cloth material, and tissue. Do NOT buy this!! It does NOT work. I don't know if these people on the forums are just lying or are paid to give good reviews or what. But I fell for it.