The Lansinoh-necked bottle has a capacity of 240 ml, which are listed on a page on a scale. The bottle has a pleasant color-neutral design in "gender neutral purple" and fits comfortably in your hand. She is (of course) and tight can be easily opened and take apart anyway, so the cleaning is not a problem: The vial can be readily and hygienically clean and is processed excellently. The lid can be easily set up and likely even after many times use not "wear out". The vacuum cleaner has a soft and stretchy shape, which should not affect the mouth and jaw development of the baby. It adapts well to actually and should not irritate the child when changing from maternal breastfeeding to bottle and back. This works for me very well. The hole size M of the nipple is designed for medium milk flow, there is a "slower" and "faster" variant. Especially practical: The vial is compatible with the Lansinoh 54050 Electric Breast Pump, wide neck.