Medela PersonalFit Breastshield (2) Size: Large (27 mm) Non Retail Packaging #87077 Go to amazon.com Related posts Top 15 recommendation medela breastshield 27 for 2022 FeatureNon retail packaging x2 breastshields. DescriptionCustomized Sizing Fits all Medela Breastpumps. Size measured where "funnel" narrows. Note: Breastshield and Connector Sold Separately