Your child needs to be well fitting in at least a size 2 pants to fit this size carrier knee to knee.
This carrier is our go to for our three and a half year old when we go on bushwalks particularly.
Step 1: Fit the Carrier Around Your Waist and Buckle.
Thread the clip through the elastic safety strap at the end of the waist band (this is protect you I the off chance your buckle comes undone or breaks, you will feel it if this was to happen well before the elastic stretches enough that your child may fall or slip). Then clip the buckle, giving it a tug afterwards to check it has closed properly.
Pull the strap to tighten the waist band, positioning the carrier body panel in the middle of yourself with the safety label facing your pelvis.
Step 2: Grab Your Child
Step 3: Pull Up the Back Panel Over Their Back
Step 4: Place Arms Through Shoulder Straps One at a Time
Repeat with the other side.
Step 5: Do Up Shoulder Strap
Another easy alternative is to get someone else to do this clip up for you.
Step 6: Re-jiggle and Tighten
Arms out is ok but I try to convince my 3.5 year old to put his arms in when I'm getting him up and once we are fitted he can pull his arms out again as I know he has a deep seat.
Another way to ensure a deep seat is to gently push up on your child's feet to raise their knees and push their bum right down into the "M" position (this is not nessicary for safety at this age but just comfort).
Step 7: Done!
But if I was wanting to do something (like dishes or hanging out the washing) or was going on a bushwalk, I would prefer to back carry so I can see my feet and have space in front of me.