Size conversion chart - adidas Ultrabounce J Core Black/White Synthetic

CM	EU	UK	US
21.6 CM	35.5 EU	3 UK	3.5 US Big Kid
22.5 CM	36.6 EU	4 UK	4.5 US Big Kid
23.3 CM	38 EU	5 UK	5.5 US Big Kid
24.2 CM	39.3 EU	6 UK	6.5 US Big Kid