Playtex Drop-Ins 4oz Premium Designer Nurser - 3 pkPlaytex Drop-Ins 4oz Premium Designer Nurser - 3pkUsed by moms for generations, this unique bottle system is clinically shown to mimic breastfeeding which makes it perfect for breastfeeding moms who also want to bottle feed.* It's easy and convenient liners ensure a fresh, pre-sterilized bottle at every feeding. That helps mom to relax and know her baby is taken care of. THE PROOF IS IN THE BOTTLEDesigned to mimic breastfeeding Liner collapses like the breast Nipple promotes latch-on like the breast Slow flow gives baby the right amount Clinically proven to reduce gas and colic