I highly recommend measuring your little ones feet when choosing their size as each child is very different.
Once you have measured your childs foot add 1-1.5cm to the length of your child's foot to ensure an accurate fit.
If your child's foot is 10cm then you would need to order a size large (11.5cm) to allow for foot growth. If your child is in-between sizes I recommend going with the larger size.
Please note: Limited 3XL size shoes available.