This adaptor fits on top of the pigeon-wide neck bottles. It was designed to ensure a complete seal when using Pigeon PP bottles specifically.

This is not required for the PPSU bottles as the material does not soften when heated.

This adaptor is also used to fit on top of the Nanobébé Silicone Bottle and MAM Bottles.

It can be used with the Jiffi Portable and Home Bottle Warmers.