Playtex Baby Nurser Drop-Ins Liners are made to work like mom. They provide a closer to natural feeding experience that's ideal for newborns, breastfed babies or any stage of introducing a bottle. Naturalatch silicone nipples mimic the breast to encourage latching and control the flow of liquid. Our bottles feature pre-sterilized liners that are easy to replace, recyclable** and guarantee a clean* bottle every time. The Drop-Ins Liners and leak-proof design make bottle time convenient and easy for home or on the go. Playtex Baby offers a variety of uniquely designed bottles that provide total tummy comfort and meet all of your baby's feeding needs. All Playtex Baby products are BPA, PVC and Phthalate Free.