Below are the corresponding shell and liner size for a given foot length.

Foot Length  Shell Size Skate Premium Liner Size Skate V2 Liner Size
21-21.5cm 36 4-4.5us / 22-22.5cm XXS / 21-22.5cm
22-22.5cm 37 4-4.5us / 22-22.5cm XXS / 21-22.5cm
23-23.5cm 38 5-5.5us / 23-23.5cm XS / 23-24.5cm
24-24.5cm 39 6-6.5us / 24-24.5cm XS / 23-24.5cm
25-25.5cm 40 7-7.5us / 25-25.5cm S / 25-26.5cm
26-26.5cm 41 8-8.5us / 26-26.5cm S / 25-26.5cm
26.5-27cm 42 8-8.5us / 26–26.5cm M / 27-28.5cm
27-27.5cm 43 9-9.5us / 27-27.5cm M / 27-28.5cm
28-28.5cm 44 10-10.5us / 28-28.5cm M / 27-28.5cm
28.5-29cm 45 11-11.5us / 29-29.5cm L / 29-30.5cm
29.5-30cm 46 12-12.5us / 30-30.5cm L / 29-30.5cm
30.5-31cm 47 13-13.5us / 31-31.5cm XL / 31-32.5cm