Lovi Dynamic Soother Silicone 3-6 Months 2 Pcs Designed to maintain to simulate breastfeeding by a speech therapist. 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 in Poland for medical purposes to ensure that rapid salivary and swallowing does not interfere with speech and biting patterns. A safe product to use. It features a calendar nipple to reduce jaw strain on the baby.