Lovi Dynamic Soother Silicone 0-3 Months Night & Day For Boy 2 Pieces Specially designed to provide a natural feeling of breastfeeding newborns up to 3 months. Made of high quality material for safe use. It features a calendar nipple to reduce jaw strain on the baby.They are of a symmetrical nature that resembles a nipple. It has a special dynamic structure based on silicon that has been tested with all materials used in manufacturing for medical purposes to ensure that rapid salivary and swallowing does not interfere with speech and biting patterns. A safe product to use.