Buy your child's current high street size, if they are half a size 5.5 buy a 5, if a 7 buy also a 7 also as we run slightly bigger.
It's advisable not to size up.
For Pre walkers -
Please measure your child's feet from heal to toe in cm, add on 0.7cm for wiggle room then compare to the insole cm on each product shoe.
Have them stand on paper and mark the paper rather than directly measure the foot.
For example if your child's feet measure 11.cm add on 0.7cm you will need our size 2 shoe of 11.8cm.
Please contact firstname.lastname@example.org if you're still unsure.