Medela Calma With Breastmilk Bottle150Ml Clear Yellow   Calma is an innovative feeding solution created for breastfed babies. It is designed to not interfere with breastfeeding, to let your baby feed the way they learned at the breast. The Calma method allows baby to drink, pause and breathe in a natural rhythm, remaining calm and settled. It allows baby to create a vacuum to start the milk flow, just like he/she does while breastfeeding.   Features Paced Feeding: Patented vent system allows milk flow only when baby creates vacuum?mimics natural breastfeeding rhythm. Natural Flow Control: One nipple fits all ages?milk flow adjusts to baby?s suction strength without switching nipples. Breastfeeding-Compatible: Designed to avoid interference with breastfeeding and maintain baby’s natural feeding pattern. Secure Venting System: Regulated airflow works effectively regardless of how tightly it’s attached.