One-Piece Breastshield (19 mm, Extra Small) Compatible with Medela Breast Pumps (Pump in Style, Lactina, Symphony… Price: $8.49 (as of 09/25/2022 20:03 PST- Details)

19 mm internal diameter; Suitable for niple diameter 15.5 – 17.5 mm; One-piece design; easy to clean, less piece to keep, and less chance for suction power loss.
Made from BPA/DEHP-free material and all components are steam safe for sterilization.
Breastshield x1 (19 mm ID, smaller than Medela’s smallest PersonalFit 21 mm breastshield), Valve x 1, Membrane x 1; Compatible with all Medela pumps EXCEPT FreeStyle, Maxi and Harmony.