Made of 100% pure food grade silicone. Non-poisonous, odorless, tasteles, anti-acid/alkali/aging. Easy to be sterilized (in boiling water). CE/FDA/LFGB approved. Versatile Designs. The shape fits well to the baby's oral cavity helpful for upgrowth. It encourages babies to open the mouth and feel as breastfeeding. It can help pacify the baby effectively. Baby bottle nipples advantage. Food grade silicone, scald preventing and Shatter-resistant. Printed with non -toxic ink, more transparent, easy to clean. Natural feeling nipple. Suitable for baby to suck milk from the feeding bottle. Nipple Size : M Age Range : 3-6 Months