Amazon.com : 34 mm 2xOne-Piece Extra Large Breastshields w/Valves and Membranes Compatible wtih Medela Breast Pumps; Smaller Than Medela PersonalFit 36 Breastshield; Made by Maymom : Baby
Breast Pump Flange Sizing Guide – Bodily
PersonalFit Breast Shields | Breast Pumps | Expressing Milk | Medela