Playtex - Drop-Ins NaturaLatch Nipples (2 pieces) These Playtex Drop-Ins Silicone Nipples are designed for use with the Playtex Drop-Ins System. Mimicking breastfeeding, the liner collapses to reduce gas and colic, making the nipple ideal for babies transitioning from breastfeeding to bottle-feeding. The raised, textured area mimics the breast, encouraging your baby to latch on. Made from medical-grade silicone, the nipples are free of Bisphenol-A and phthalates, and the two-count package offers added value and convenience.