Description Videos Reviews Use the infant insert to enable the cozy carrying position with your Tula carrier, ensuring adequate head/neck support and healthy maturation of the spine in a front carry. The infant insert includes an integrated harness which secures your baby to the insert. The infant insert is an optional accessory to the Tula baby carriers and is recommended in order to use the carriers from newborn up to approximately 15 lbs. (and until your baby can sit independently with knees dangling down freely in the correct M-position). The infant insert to be used with the Standard size Tula, NOT the Toddler size Tula. The infant insert is not intended to be used in a back carry.