Sizing guide (innersole = inside of footwear, from heel to toe):
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.