The new PhilipsAvent natural 2. 0 teat is anti-colic with skin soft material and flexible spiral design, more closely resembles the breast. Like all PhilipsAvent products, these are 0 percentage bpa bisphenol a free. The comfort petals and natural nipple shape allows natural latch on and makes it easy to combine breast and bottle feeding. Compatible with PhilipsAvent natural bottle. The range offers different flow rates for the most comfortable feed.