Safe Material Nipple Corrector is safe, healthy, no burden on the skin, and can be guaranteed for a long time because they are made of high-quality PP and silicone materials Convenient to UseYou simply place the Nipple Corrector Suction on the nipple and pump, the push will draw the air out of the pump and use negative pressure to drag the nipple for a restorative effect Using2-3 MonthsInverted Nipple Corrector will bring you efficient and satisfying results; the more you use, the better the effect, it will take about 2-3 months MultiplepurposeThis versatile Nipple Suckers For Breastfeeding is a great way to help breastfeeding mothers with flat or inverted nipples and small or built-in nipples Small SizeNipple Inverter is small in size and easy to carry. You can put it in your backpack when you go on a business trip. It will not take up your space and can be used at any time.