Yes, you do. The bottle neck size of the Classic polypropylene bottle may slightly change over time. The adapter ring makes sure the anti-colic valve in the teat will work properly, preventing air into your baby's tummy.
Frequently Asked Questions
- Is it safe to use discoloured Avent products?
- Do I need to use the adapter ring on the classic bottle?
- Why are sealing discs not supplied with Philips AVENT bottles?
- Is the Classic range compatible with the rest of Avent?
- Why is the bottle not transparent?
- Can Philips AVENT bottles go in the Freezer?
- What makes the bottles anti colic?
- Can I use a microwave to warm up my Philips Avent bottle?
- Is this product recyclable?
- What are Philips Avent bottles and parts made of?
- What material is my Philips Avent bottle made of?
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