A ring sling is one of the simplest carriers for a newborn, but getting a secure, comfortable fit takes some practice. The key is positioning your baby upright with their knees higher than their bottom, keeping them high enough on your chest that you can kiss the top of their head without bending down. Here’s how to do it safely from the first use.
Before You Start: The Safe Position
Newborns should always ride upright in a ring sling, not cradled horizontally. The upright position keeps their airway open and their weight distributed safely. A cradle carry can cause a baby’s chin to press against their chest, which restricts breathing. Health Canada compares it to trying to drink through a pinched straw. Babies under four months, premature babies, and those with medical conditions are at the highest risk because they lack the neck strength to reposition themselves.
The goal is what’s called the M-position: your baby’s knees sit slightly higher than their bottom, with their thighs spread around your torso and their hips bent. The International Hip Dysplasia Institute recommends this as a healthy default for babywearing because it seats the ball of the hip joint evenly into the socket. When the hips are bent up higher, less spread is needed. When the legs hang straighter, more spread keeps the joint healthy. For a newborn, this looks like a natural frog-legged posture with both knees tucked up.
How to Put the Sling On
Start by threading the tail of the sling through both rings, then back through only the bottom ring, creating a loop. The rings should sit roughly at your collarbone on one shoulder, with the fabric fanning out across your back to the opposite hip. Before picking up your baby, spread the fabric wide across your shoulder and back. A narrow bundle of fabric on your shoulder will dig in and make the whole carry less comfortable.
Position the rings high, near your collarbone. They’ll slide down slightly once your baby’s weight is in the sling. If you start with the rings at the right height, they’ll settle just below your collarbone, which is where you want them. Rings that drift to the middle of your chest or lower usually mean the sling started too loose.
Placing Your Baby In
Hold your baby against your chest on the side opposite the rings, with their head near your shoulder. Use one hand to support them and the other to pull the inner edge of the fabric (the rail closest to your body) up and over their back. Then pull the outer rail up to create the pouch.
Seat your baby on top of the bottom rail of fabric so it runs from one knee pit to the other, creating a deep seat. Their legs should form that M-shape with knees higher than their bottom. For very young newborns whose legs are still tightly curled, you can tuck both legs inside the sling, but most babies do well with legs out from birth as long as the fabric supports from knee to knee.
The top rail of fabric should come up to the base of their neck, supporting their back fully without covering their face. Make sure your baby’s face is always visible, never pressed against the sling fabric, your body, or your clothing.
Tightening: The Part Most People Struggle With
This is where ring slings either feel great or feel impossible. The trick is tightening the fabric in sections, not all at once. Think of the sling as having three rails: the top edge, the middle, and the bottom edge. Each one needs to be pulled through the rings independently.
Before you start tightening, lift your baby’s bottom slightly with one hand. The rings lock in place under your baby’s weight, so if you try to pull fabric through while they’re sitting heavy in the pouch, nothing will move.
With your baby’s weight lifted, tighten each rail separately:
- Top rail: Pull it parallel to the floor, straight across toward the rings. This snugs the fabric against your baby’s upper back and keeps them close to your chest.
- Middle section: Pull diagonally downward. This removes slack from across their back.
- Bottom rail: Pull straight down. This deepens the seat and secures their bottom.
The direction matters. When you tighten each section, keep your pulling hand aligned with that specific strand of fabric. If you pull the top rail downward instead of across, you’ll drag the middle and bottom fabric through with it and create bunching in the rings. Pull out first, then in the appropriate direction. Pulling on an angle jams everything together.
Checking Your Work: The T.I.C.K.S. Rule
Once your baby is in and the sling feels snug, run through this five-point check:
- Tight: The sling should be snug enough that your baby doesn’t slump or shift when you lean forward slightly. No loose fabric gaps between your body and theirs.
- In view at all times: You can see your baby’s face without moving any fabric. Their nose and mouth are completely clear.
- Close enough to kiss: If you dip your chin, you can kiss the top of their head. If they’re riding lower than that, the sling is too loose or the rings started too low.
- Keep chin off chest: There should be at least a finger’s width of space between your baby’s chin and their chest. If their head is curled forward, reposition them so their face tilts slightly upward or to the side.
- Supported back: The fabric holds their spine in a natural curved position. They shouldn’t be slumped into a C-shape or leaning away from your body.
Common Problems and Fixes
Baby Feels Too Low
If your baby has sunk to your waist, the sling wasn’t tight enough before you let go. Take them out and start over with the rings higher on your shoulder. Tighten all three rails before releasing your supporting hand. A well-fitted sling holds your baby high enough that their head is at your chest level or above.
Fabric Jams in the Rings
Bunching happens when the fabric gets pulled through at the wrong angle. Spread the fabric flat in the rings before each use. When tightening, pull each rail in its correct direction (across, diagonal, down) rather than yanking everything downward at once. If the fabric is truly stuck, lift your baby’s weight off the sling and work the fabric through with both hands, fanning it flat as you go.
Baby’s Legs Seem Bunched Up
If your baby’s legs are pressed against their stomach, their breathing can be restricted. Pull the bottom rail of fabric wider so it spreads from knee pit to knee pit, letting their legs open into the M-position. Their thighs should rest against your torso with knees bent and slightly splayed, not squeezed together.
The Shoulder Feels Uncomfortable
Fan the fabric as wide as possible across your shoulder and upper back. A ring sling carries all the weight on one shoulder, so the more surface area the fabric covers, the better it distributes the load. Some parents find it helps to alternate shoulders between carries. If you’re using a gathered ring sling rather than a pleated one, take extra time to spread the fabric before placing your baby in.
Tips for the First Few Weeks
Practice over a bed or soft surface while you’re learning. Use a doll or stuffed animal to get comfortable with the threading and tightening motions before trying with your actual baby. Most parents find the ring sling clicks after three to five practice sessions.
Newborns are actually easier to carry in a ring sling than older babies because they’re lighter and naturally curl into the right position. Their instinct to tuck their legs up works in your favor. As your baby grows and starts to straighten their legs more, you’ll need to be more intentional about creating a deep seat to maintain that healthy hip position.
If your baby falls asleep in the sling, check that their head hasn’t dropped forward. A sleeping newborn’s head can fall chin-to-chest, which narrows the airway. Gently support the back of their head with the top rail of fabric or reposition them so their head rests against your chest with their face turned to the side, nose and mouth fully visible.