The unique Calma teat with a 150ml breast milk bottle. Calma is an alternative to breastfeeding for mothers wishing to feed their babies with breast milk. With Calma: - It enables babies to maintain their natural feeding behaviour learned on the breast. - Babies can drink, breathe and pause regularly. - It Supports an easy transition from the breast to the feeding solution and back to the breast. - One size is sufficient for the entire breastfeeding period, just as in nature. - The unique feeding solution for your baby.