Several anti-irritation holes Ensure air flow preventing saliva stagnation and leaving the skin free to breathe. Ergonomic shape It adapts to the baby's face, ensuring the right space for nose and chin. Rounded edges for gently resting on the skin. THIS IS WHERE IT ALL BEGINS Chicco PhysioForma pacifiers train all the mouth's vital functions for healthy growth: BREATHING, SUCKING, SWALLOWING, CHEWING, PHONATING. PHYSIOFORMA IS ONLY BY CHICCO PhysioForma is the anatomical and functional design exclusive to Chicco pacifiers, developed to correctly promote and stimulate the mouth's vital functions during nonnutritive sucking by maintaining the tongue's physiological posture high against the palate. THE MOUTH AS A VITAL CONFLUENT The mouth is described as “vital confluent” because many vital functions are activated and developed inside the oral cavity, with various interconnections and key effects on children's healthy growth: BREATHING, SUCKING, SWALLOWING, CHEWING and PHONATING. The Chicco PhysioForma anatomical and functional pacifier can play a crucial role in this dynamic: it has a positive impact on the development of the mouth and its functions, because it allows the tongue's correct positioning, and therefore guarantees the palate's harmonious development and its proper and thorough stimulation. Practical sterilizing case The new sterilizing case allows you to sanitize the soothers in a microwave, killing 99.9% of harmful household germs in 3 minutes! STEP 1: fill water to the level line, place the soothers inside the case and close the lid; STEP 2: microwave for 3 minutes at 750 Watt.