Medela Calma Solitaire Breastmilk Teat is a teat to feed breastmilk to babies. Does your baby rely on your breastmilk, but you are not always available to breastfeed? The features of Calma teat mimics that of a mothers' nipple - so that baby switches easily between mother's nipple and bottle. Calma teat is designed uniquely to feed breastmilk to babies.