The Pigeon FlexibleTM PP Bottle is a 240ml is for a 3+ months baby slim neck bottle with a cute blue balloon design. Use with FlexibleTM Peristaltic Teats is made from light weight plastic. Best suited for low to regular use. When baby is not breast-fed. Baby is very small and if baby sometimes fusses at the teat. Comes with a Flexible Medium (M) hole Nipple which has a slim neck and is made with double thick silicone that is soft and makes latching easy. Along with a venting system that helps minimize swallowed air and colic in babies. This bottle is BPA free.