Medela Breast Shield Inserts (21mm, 18mm, and 15mm)

Medela Breast Shield Inserts (21mm, 18mm, and 15mm) Authentic Medela Breast Shield Inserts, in sizes 15mm, 18mm, and 21mm, that snuggly fit into Medela's 24mm breast shields. Compatible with the following Medela breast shields: PersonalFit Flex breast shields, PersonalFit Plus breast shields, and Hands-free Collection Cup breast shields. Easily adapt your Medela pump and breast shields to the size you need with these inserts, designed to uniquely fit Medela's patented 105-degree breast shields. Pack of 2 of each size.