Carrying infants close to the body via skin-to-skin contact using wraps has been a common practice across most cultures for thousands of years.

“if you look at most cultures around the world for thousands of years what they did was they wore their babies for what we call the fourth trimester usually the mother so a bunch of patriarchal reasons for that but they literally would have a wrap on and the baby would be wrapped and be held very close to them this is the baby beorn thing well the baby beorn you put the baby on front of you but it's facing out when you really wrap them with like a 20 yard WP it's skin to skin right”