[. . . ] [. . . ] (www. philips. com/AVENT). · BPA-Free Development stages Soft teat with rounded shape to promote natural feeding action · · Stages: 0-6 months, 0­6 months BPA-free Unique anti-colic valve This teat is made from silicone - a BPA-free material As your baby feeds, the unique skirt on the AVENT Teat flexes to allow air into the bottle instead of your baby's tummy. Like natural breastfeeding your baby controls the milk flow Silicone teat Soft silicone teat with built-in anti-colic valve Issue date 2010-09-10 Version: 9. 0. 1 © 2010 Koninklijke Philips Electronics N. V. [. . . ] [. . . ]