Painless and safe: The nipple suction device covers the nipple and uses physical suction to suck out flat and inverted nipples to keep the nipple upright. It is non-surgical, healthy and effective. Easy and flexible use: Apply cream or glue for a tighter and more comfortable fit, then cover your nipple, adjust the pressure to what works best for you, and use the pump to slowly suck out your nipple. High-Quality Material: The nipple corrector is made of soft high-quality silicone material, which is non-burdening to sensitive skin and comfortable to use. Easy to clean, wash with warm water and store in a cool, dry place. Invisible size: The size is similar to the nipple, so when you wear loose bras and other clothing, it does not affect the appearance after wearing it.