Oh ok I know what this is. I have one but know it as a sns. I nursed my baby girl for the first 8 days no formula and we actually took her to the er when she was one week old because I was concerned that she was not having enough wet and dirty diapers. The dr.s there said she was constipated and she was not dehydrated. I came to the conclusion she was getting my let down but thats it. She cannot suck hard enough to get anything else. . I have been feeding her once in the evening with the sns. It is nice to have her fall asleep at breast. Thanks for your help.