2 Natural Response Silicone Teats Philips Avent Food Flow 6M+Pack of 2 Natural Response food flow teats (thick liquids). The Natural Response teat only releases milk when the baby is actively drinking and creates a natural latch on thanks to its breast like shape. With the Natural Response teat, babies can drink at their own pace, just like at the breast, making it easier to combine breastfeeding and bottle feeding. The teat has a unique opening that only releases milk when the baby is actively drinking. When