Food Grade Silica Gel MaterialThe nipple corrector is made of food grade silica gel material, soft, non-toxic, odourless and skin-friendly. Invisible wear: the adjustment device with the signs of invisible wearing and the simple correction can be inserted into the underwear so that others cannot see it from the surface. Adjust the attraction force: press the top to create a weak pressure. Wearing is easier.Press the top deeply to create a strong pressure and tighten it firmly. And you can adjust the attraction so that it is very comfortable when you use it. Restore nipple defects: the soft nipple corrector can restore nipple defects for normal, smooth breastfeeding. Ideal for mothers with nipple defects. You deserve this special nipple corrector. Suitable for pregnant women: the nipple corrector is suitable for pregnant and breastfeeding women with nipple retraction. When you use it, you will feel comfortable. Give mothers the best experience and give your baby the best experience.