The ERGObaby Organic Heart 2 Heart Infant Insert goes with the Ergo Baby Carrier so that you can use one carrier through all the stages of your baby's growth. The ERGObaby Infant Insert is a specially padded and shaped cushion that can be quickly and easily placed in the carrier and readjusted as needed. This design easily enables parents to ensure that their newborn is positioned correctly on the pillow, keeping pressure off the developing sacrum, and supports the development of the spine and hips. It snaps closed around the infant, holding the baby in a cozy, protected environment close to the heart, as well as in an ergonomically correct natural sitting position. Ergo Baby Carrier sold seperately.