30 mm One-Piece Extra Large Breastshield w/ Valve and Membrane for Medela Breast Pumps; Compare to Medela 30 mm (X-Large) Personal Fit Breast Shield and PerosnalFit Connector; Made by Maymom Review August 7, 2018 MarblePiglet No Comments Breast Pumps Breastshield with valve and membrane. Post navigation ← Electric Breast Pump Rechargeable Pumping Digital LCD Display, Massage and Suction 2 in 1 (Purple) ReviewLittle Nika Breast Shells, Breastmilk Collector, Ease Nipple Pain, Nursing Cups, Milk Savers, BPA Free, Flexible Food Grade Silicone for Comfort, Set of 2 Review →