Sizing guide (innersole = inside of footwear, from heel to toe):
150 (15 cm innersole, approx 2.5 years)
160 (16 cm innersole, approx 3 years)
170 (17 cm innersole, approx 3.5 years)
180 (18 cm innersole, approx 4-5 years)
Please note that the ages above are to be used as a guide only as every child has different measurement. For the best fitting, please measure your child's feet and allow 0.5 cm for wiggly room (this will get you the innersole measurement).