Tried it is adopted, it takes mechanical milk by use of the vacuum (as cupping) allows gentle suction of maternal milk. It comes with reusable so sterilized jars conservation. By cons it is only for a person so we can not consider moving it to an acquaintance because it is a question of hygiene for mom and baby. Lightweight, it allows use in comfortable sitting position. The capacity of pots is roughly the equivalent of two yogurts. The inside of the part that is placed directly against the nipple is made of soft silicone. It is a device that can be further assistance between feedings