Pigeon Soft Touch Peristaltic Plus Bottle 2`S is specifically designed to ease the baby's transition from breastfeeding to nursing bottles. The bottle focuses on optimizing the three essential mechanisms of breastfeeding: latching, swallowing and peristaltic movement. They have accomplished this by creating teats that resemble the mother's nipple. The teat hole is round so that the newborns are able to suck milk without too much effort. Moreover, the bottle is sturdy and does not collapse easily like most baby bottles do after long use. The product is BPA-free.