The Rhythm Electric Breast pump memorizes personalized rhythm, fast rhythm that encourages milk flow and slow rhythm to express gently. It allows you to switch between electric and manual one handed pump. It has a soft massage cushion to help stimulate the breast and therefore encourage natural milk flow. It also comes with a flexible next for better comfort. It features the soft silicone horn liner which is a soft silicone liner that lines the inside of the horn so the liner feels soft, natural and facilitates a better suction for the horn to express your milk more easily.