The Heart to Heart insert is not just about where baby's head is, it is also about supporting proper growth of the sacrum.
Here is what Ergo has to say about their insert. I do not endorse the use of the Ergo for young babies with out the insert.
The ERGObaby Infant Insert is designed with Back Support Padding and a Bottom
Support Cushion intended to support the natural curvature of a baby’s developing spine, and to
ensure a healthy hip/leg position. While the spine is developing infants are not to be seated with
weight bearing on their sacrum. Straightening of the spine happens in three different stages
and takes about one year. The ERGObaby Infant Insert ‘s new design encourages
proper spinal development and a healthy hip/leg position by eliminating weight bearing on the
developing sacrum.
The ERGObaby Infant Insert enables parents to carry their newborn close to
their body. The ERGObaby Carrier in combination with the Infant Insert enables
you to buy only one carrier that will assist you through all the stages of your baby’s growth.
The Infant Insert is a specially padded and shaped cushion that can be quickly
and easily placed in the carrier and readjusted as needed. Your infant is then held in a
cozy, protected environment close to your heart, as well as in an ergonomically correct
and naturally supported position. This is best for the baby’s physical development from
newborn to between 4 - 5 months. Parents can remain attentive to their baby’s needs and
at the same time continue daily activities.
The Infant Insert has an optional closure strap to secure smaller infants (between
approximately 5-8lbs), or infants that prefer to be more tightly swaddled. DO NOT, under any
circumstances, use the strap as a handle to carry your baby in the Infant Insert.
