Safe material and anti-backflow design: The electric breast pump is made of 100% high quality food grade silicone materiall. Anti-backflow design prevents breast milk from entering the motor or tube to prevent bacteria, mold and virus from affecting breast milk and baby, while prolonging the life of the breast pump. Highly efficient: Perfect breast suction design saves mom's time. Featuring 2 pumping modes (massage, suction) and 9 suction levels, the breast pump allows for painless pumping, giving new moms more choice and convenience. Quiet and hygienic: Thanks to the durable fabric the sound of the engines remains below 45dB. You don't have to worry about waking your baby while pumping during a nap or before bed. A hygienically closed system prevents breast milk from entering the motor or tube to ensure hygiene. USB cable rechargeable: You can use your double breast pump with the supplied USB or adapter plug use anywhere or charge. Adjustable from level 1 to 16 with the memory function that satisfies your held pattern. Tip for you: Massage and stimulate the breasts before pumping, make it more comfortable.