Introducing the Playtex Baby Nurser Drop Ins Liners 200 Count 4oz. Factory Sealed New. This bottle set includes disposable liners, making it convenient for parents on-the-go. The anti-colic nipple type is designed to reduce gas and fussiness in infants. The BPA-free plastic bottle material ensures safety for your little one. The standard bottle type and clear color make it easy to use and monitor liquid levels. Suitable for infants from 1 month old, this bottle set is a perfect choice for feeding your baby.