Medela Solo Single Electric Breast PumpDescription Solo is a single electric breast pump with closed system, that prevents breast milk from entering the tubing, overflowing and leaking into the pump mechanism. This helps ensure that your expressed milk stays safe and clean, but also that your pump's components are protected from potential damage. Feature Easy to use: 4 button intuitive interface and 9 pre programmed settings. Easy to assemble and clean thanks to few parts. Lightweight and