Physio Comfort, the maximum comfort for your baby with a pouch that is sterilized! Extra ergonomic shape: maximum space for chin and nose to facilitate breathing and movement. Minimal contact: only 4 convex contact surfaces to minimize contact for extra softness on the baby's skin Wide area at the base of the nipple: Well spaced from the mouth of the baby to ensure the right space with the natural movements of the lips while breastfeeding.