Which Philips Avent Natural Nipple do I own?

Both the previous and new Philips Avent Natural Nipples are designed to look and feel like a breast, but only the new Natural Response Nipples are also designed to work like one, releasing milk only when your baby actively drinks.The Natural Response Nipple comes in 5 sizes, and they can be recognized by the following features:•    Slit on the tip of the nipple instead of a hole;•    Swirl design around the petals;•    Grey Philips Avent logo on the bottle.To check whether you have the older or new Natural Response Nipple, please refer to the illustration below.

The Best Baby Bottles (and Bottle Brush)

Natural Response & Anti-colic Baby Bottle Nipples

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