The Philips Avent hand pump is gentle and portable. The compact little pump is easy to take with you wherever you need to pump, both at home and on the go. This natural motion technology is inspired by baby sucking and massage during breastfeeding for rapid flow of milk during pumping. In our hand pump, Natural Motion technology gently combines suction and nipple stimulation for rapid milk flow. The soft silicone cushion adapts comfortably to both the size and shape of the breast. Fits nipple sizes up to 1.18 inches. The angle of the pump allows a vertical pumping position thanks to a non-sloped design. The pump has only a few parts and is therefore easy to install, use and clean. You can pump directly into the base of the 4-ounce natural bottle and then attach the natural response pacifier for immediate feeding. If he doesn't feed right away, you can use the sealing disk and 4-ounce bottle to store the milk. The natural response mouthpiece is Flow 2 is included. Additional replacement nipples are available, flow 1-5. Includes a flange cover to keep the pump clean during transport. Made from BPA-free materials. Model: SCF430 / 30 Includes a flange cover to keep the pump clean during transport. Made from BPA-free materials.