Medela Women's Handsfree Bustier Pumping Bra (White, Medium) Handsfree pumping, now made easy. An easy expression is the newest addition to Medela's line of breast pump accessories. Authentic Medela spare parts are engineered, tested and approved to work specifically with your Medela breast pump. Non-Medela spare parts can vary significantly in design, materials, and workmanship. All of which may affect the performance of your Medela breast pump.