Painless and Safety : Nipple aspirator covering the nipples and using physical suction to suck out the flat, invaginated nipples, the nipple will stay erect, non-surgical, healthy and effective. Use easy and flexible : Apply cream or glue to get more tightness and comfort, then cover the nipples, adjust the pressure to the most suitable for you, use the pump to slowly suck out the nipple. Materials : Nipple corrector is made of soft Silicone material, no burden to sensitive skin, comfortable to use. Easy to clean, wash with warm water then store it in a cool, dry place. Invisible size : The size is similar to nipple, it does not affect the appearance after wearing when you wearing a loose bra and other clothing. Kindly Note : It takes a few weeks to achieve the best results. If you have any questions, please feel free to contact us. Anything can be solved more simply through communication. In the title and , we have provided the details of the product, including its features and specifications, please pay attention to the size and dimensions of the product to ensure that it meets your needs. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please feel free to contact us. We are here to help and will do our best to help you.