The Avent Isis™ Breast Pump stimulates let-down gently with soft "petals" that massage the breast while the silicone diaphragm draws a consistent milk flow. The result is a pump that works naturally to provide efficiency--giving you the flexibility to continue breastfeeding your baby.

Only ISIS is clinically proven to be as effective as electric pumps Only ISIS features a Let-down Massage Cushion™ for a fast, natural let-down Only ISIS combines massage with a gentle vacuum, while all other pumps rely solely on suction Only ISIS redefines manual pumping by needing only occasional compressions on the handle after achieving let-down You can prepare for a successful breastfeeding experience with the Avent ISIS Breast Pump. ISIS is a manual pump clinically proven to be as effective as electric pumps, yet mothers rated ISIS easier and more convenient to use. ISIS is designed to work naturally, and is ideal for new mothers who are learning to breastfeed. ISIS is the only breast pump that has a patented Let-down Massage Cushion™ to stimulate the same gentle let-down as breastfeeding. This allows you to express milk more quickly, with no discomfort, even in the early stages of breastfeeding. ISIS is the only pump that doesn’t rely on suction alone to be effective. Instead, ISIS uses a gentle massage and vacuum system that works quickly and efficiently. First, the soft petal massagers flex with each compression of the handle to gently massage the area behind the nipple, achieving a natural let-down. Then, the massagers work in tandem with the silicone diaphragm to draw milk gently and consistently, maintaining a fast milk flow with only occasional compressions from you.   The handle gives you fingertip control to make subtle and effortless adjustments for personal comfort, without interrupting your milk flow. With ISIS, the speed and pressure are exactly what you need, every time. ISIS is designed to be lightweight and easy to take with you, and works quietly without batteries or electricity so you can express milk discreetly, anywhere, anytime. The Avent Natural Feeding System is fully interchangeable, so you can use the same container to pump, store and feed without ever transferring your breast milk. This time-saving convenience is especially important to preserve valuable nutrients that can be lost each time breast milk is transferred. Included with the Avent ISIS Breast Pump: Two 4-oz. Avent Natural Feeding Bottles featuring Avent Anti-Colic Nipples with the Newborn Flow Rate Two Sealing Discs for breast milk storage, and spare parts