Because ERGObaby is very concerned about correct support of our babies, through research studies, customer feedback and working directly with newborns, we have designed the ERGObaby infant Insert heart to heart. The design encourages healthy maturation of the spine by supporting the pelvis, hip joint and leg position rather than putting a baby in a compromising sitting position before the spine is ready. The ERGObaby Infant Inser also supports the baby's head and neck in this critical stage of development.