Medela Harmony™ Manual Breast Pump Essentials packDescription The Harmony Essentials Pack combines everything mums need for breast milk pumping in one breast pump set. It comes complete with a silicone teat, four milk storage bags to store and freeze your milk, and four ultra thin nursing pads: everything you need to express and store your breast milk and feed it to your baby. Medela Harmony is a single manual breast pump, perfect for mums who want to try out pumping, mums who express occasionally