The Isis Manual Breast Pump by Avent provides enhanced efficiency from an ordinary manual breast pump. It is a revolutionary breast pump that helps to massage the breast areola (area around the nipple) in order to stimulate milk flow. Not only is it acclaimed by women and health professionals for its unique design, the Philips Avent Manual Breast Pump is clinically proven to be as effective as a hospital-grade pump (measured in a 20 minute period against a hospital-grade double breast pump when used for sequential pumping in mothers who delivered preterm infants). It is also rated significantly better with regards to 'ease of use', 'amount of suction', 'comfort' and 'pleasant to use'. The Philips Avent Manual Breast Pump uses the patented Let-down Massage Cushion found in all Philips Avent Breast Pumps. This soft silicone cushion with five petal sections helps to massage the breast areola (area around the nipple) in order to stimulate milk flow as well as helping stimulate the let-down reflex. By squeezing the handle at your fingertips it's easy to make adjustments to the rate and level of suction at any time, therefore allowing you to be in control of producing more milk faster and comfortably.