Wraps, slings, soft-structured carriers, buckle carriers — the styles vary a lot, but the safety principles behind all of them don't. The T.I.C.K.S. rule, developed by the UK's Baby Sling Consortium, is the standard reference point, and it holds regardless of which specific carrier you're using.
The T.I.C.K.S. rule
Tight — the carrier should hold your baby snugly against you; loose fabric lets a baby slump into a position that can restrict breathing
In view at all times — you should be able to glance down and see your baby's face without adjusting the carrier
Close enough to kiss — your baby's head should be close enough to your chin that tipping your head down would let you kiss it
Keep chin off chest — a baby's chin pressed to their chest can narrow the airway; there should be at least a finger-width of space
Supported back — a baby's back should be gently curved, tummy and chest against you, not slumped or overly arched
The chin-off-chest point is the one most linked to real safety incidents — a slumped position can partially block a young infant's airway without obvious struggle. Check this position specifically every time you put a carrier on, not just when you first buy it.
Hip-healthy positioning
For hip development, the position that matters is often called the 'M' or frog position — hips bent, knees spread out to the sides, with the carrier supporting a baby from knee to knee, not just at the crotch. The opposite — legs hanging straight down and pressed together — is linked to a higher risk of hip dysplasia over time. Most reputable carriers are designed with this in mind, but it's worth checking how a baby is actually seated once the carrier is on, not just trusting the product description.
A few more practical points
Newborns and young infants should generally face inward, toward the wearer, until they have solid head and neck control
Avoid babywearing while cooking, near hot liquids, or doing anything where a fall risk to you also becomes a fall risk to your baby
Check your specific carrier's minimum weight and age requirements — some aren't rated for very small newborns without an insert
If a carrier feels wrong or your baby seems uncomfortable, trust that over trying to force a position that isn't working
Sources
Every claim, sourced
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