DESC: At last, a more natural way to express milk. The revolutionary new Avent Isis Breast Pump is so comfortable, effortless and efficient, it can express the same amount of milk in the same amount of time as electric pumps. The secret is the combination of its soft cushion petals and silicone diaphragm which work together to mimic breastfeeding. The soft petals in the cushion message the breast while pumping to stimulate a natural let-down reflex. The silicone diaphragm creates a vacuum just like a baby does while breastfeeding. These two design breakthroughs work together to help express more milk quickly and naturally.