Only Medela offers authentic replacement tubing that is designed And tested to work specifically with your Sonata breast pump. The Medela Sonata replacement tubing can be used as a convenient spare or replacement for worn or damaged tubing. As an authentic Medela spare part, Our Sonata replacement tubing is made with the quality materials and workmanship that moms expect from our brand - Inauthentic or counterfeit parts can vary greatly in terms of quality, materials used, and overall workmanship, all of which may adversely affect the performance of your breast pump. One complete set of tubing is included with each retail purchase. Additionally, all Medela breast pump parts and accessories that come into contact with breast milk are made without BPA, so you can continue feeding your little one with breast milk for as long as you choose. Iqvia ProVoice Survey; nov 2017 - Oct 2018. Medela 2018 U.S. Breast milk feeding Report. Medela 2017 managed markets pulse study.