Pigeon Flexible Crystal PP Bottle is a slim neck bottle with an attractive blue star design. Use with Pigeon Flexible Peristaltic Teats. Made from clear, light weight plastic (Crystal PP; polypropylene), the Flexible Crystal PP bottle has a streamline shape and is suitable for regular to high use. The bottle is supplied with a Flexible Peristaltic teat. Each teat has a slim neck with double thickness silicone to ensure ideal softness and flexibility for latching on comfortably and easily. Each teat also features an unique venting system to minimise swallowed air and help reduce colic. BPA and BPS free. Bottle capacity: 250 ml. Teat size M, round hole, 4+ months.