How to define the right shoe size?
It's best to place both children's feet on a piece of paper and draw with a pencil outside the feet. Make sure that each foot is fully extended and double check that your child’s toes aren’t curled. Please measure from the heel to the longest toe and add a tolerance of 0,5 cm or 1.0 cm. Now you can choose a size from the chart.
| Size | US | UK | EU | Age | Foot Length | Sole Length | Sole Width |
| S | 3,5 | 1-2 | 17/18 | 0 - 6 mos | up to 11,5 cm | 12 cm | 5,8 cm |
| M | 4 | 3-4 | 19/20 | 6 - 12 mos | up to 12,5 cm | 13 cm | 6 cm |
| L | 5 | 4,5-5,5 | 21/22 | 12 - 18 mos | up to 13,5 cm | 14 cm | 6,3 cm |
| XL | 6 | 6-7 | 22/23 | 18 - 24 mos | up to 14,5 cm | 15 cm | 6,5 cm |
| XXL | 7 | 7-8 | 24/25 | 24 - 36 mos | up to 15,2 cm | 15,7 cm | 7 cm |