... sucking.2,Press the fingerprints of the cover with thumb and index finger separately, push down on ... , durable and washed easily.6,Stays close to the month softly and comfortably, advances the ... growth of the oral cavity and helps babies do some appropriate and regular exercises for the mandible ... , and heat-resistant to 120°C.3,Chain is made from PLASTIC Great helpful baby Pacifier with Plastic Chain