Comfort ProperFit™ Soft Silicone CushionProvides a secure seal and comfortable fit for more efficient pumping2 Phase Technology – Stimulation and Expression modesStimulation mode gently stimulates the breast to initiate milk flow and Expression mode to maximize milk flowAdjustable Suction Pressure6 adjustable levels of suction pressurePortable and compactFor easy pumping anytime, anywhereSimple and easyFewer parts, which makes it easy to assemble, use and cleanNo backflow featureHygienic design to prevent milk from flowing back to the funnelBottle standSecures bottle to prevent spills- Can be sterilised by Boiling, Steam, Microwave, or Chemical- click here for more information on Peristaltic PLUS™ nipple Size SS