The Ergobaby 3-in-1 Evolve bouncer grows with the baby from a newborn lounger to infant bouncer, to a toddler seat. Starting from day one, your baby will experience comfort from head to hips thanks to the ergonomic newborn insert developed with guidance from a pediatric orthopedist. It’s easy to adjust and fold along with its natural rocking feature and breathable mesh fabric for maximum airflow and cooling comfort.