With the Calma Feeding System from Medela, your stored breastmilk will only flow if your baby uses the same facial muscles used in breastfeeding to create suction to remove the milk
Your baby can feed, pause, and breathe, similar to breastfeeding, thus reducing stress
1 size/shape nipple for all stages
Air venting system to equalize pressure
Small hole for milk to flow through so your baby doesn't get flooded
