Maymom Breast Pump Kit for Medela Pump in Style Pumps; 2 Large One-piece 27mm Breastshields, 4 Valves, 6 Membranes, & 2 Pump-in-Style Tubing;Simple Wishes Bra Compatible and Medela QuickClean, Micro Steam Bag Safe.
It is well known that using the correct breastshield size is important for your pumping comfort and optimal milk supply. It is also known that one-piece design offers easy to clean, fewer pieces to keep, and no seams to lose suction power. Medela offers most breastshields only in the two-pieces form. Maymom is the first company world-wide to offer 19, 21, 25, 26, 27, 29 and 30 mm internal diameter one-piece design breastshields to fit Medela users' personal pumping needs. The valve/membrane in this set are interchangeable with your existing Medela parts. Maymom has 4 years experience in making breast pump parts. 100% compatibility is guaranteed or your money back!