The Pigeon Flexible Glass Bottle is a slim neck baby bottle for use with Flexible Peristaltic Teats. Made from glass, Flexible Glass bottles have excellent transparency and offer years of use. The Flexible 240ml glass baby bottle is supplied with a Flexible Peristaltic teat. The Flexible Peristaltic teat has a slim neck, which is different to the Pigeon SofTouch Peristaltic bottle. Made with double thickness material, the Flexible Peristaltic teat encourages seamless latching. The Flexible Peristaltic bottle offers a unique venting system which helps minimise swallowed air and colic in babies. The Flexible Glass Baby Bottle is BPA and BPS free. Bottle capacity: 120ml. Teat size S.round hole, 0+ months Excellent transparency Best plastic alternative Years of use S teat.round hole, 0+ months The Pigeon Flexible range of bottles and teats is ideal for formula feeding. Most of today's glass bottles are made of sturdier glass that can also handle rapid changes in temperature, such as when warmed up.