the closer to nature single electric breast pump is specially designed to mimic a babys natural feeding action, for excellent results at the touch of a button.the unique silicone cup makes our single electric breast pump super-comfortable to use. there are 4 settings to choose from: light, low, medium and high. we recommend starting with the light mode to encourage milk let down, and then moving onto the setting that feels right for you.key featuresportable and lightweightincludes handy sterilizer boxonly 3 parts easy to use, clean and assembleelectric or battery operated perfect for in or out of the homebpa-freeincluded inside: 1 x 5 oz. closer to nature feeding bottle, 2 x milk storage pots, 6 x disposable breast pads, 1 x microwave sterilizer boxproduct specificationspecial featuresnatural feel expression.natural feel expressionthe closer to nature single electric breast pumps soft silicone cup is specially designed to mimic a babys natural feeding action.efficient milk expression.efficient milk expressionyou can switch between low, medium and high suction levels during expressing to give you maximum efficiency and extra comfort. 0% backflow guaranteed.extra comfort.