Vans infant Chukka V Moc Crib shoes have been redesigned for a perfect fit in the style of the original Chukka V Moc BABY SIZING (MEASUREMENTS OF OUTSIDE SOLE OF SHOE) Size 1 - Birth to 6 weeks (10cm) Size 2 - 6 to 12 weeks (11cm) Size 3 - 3 to 6 months (12cm) Size 4 - 6 to 9 months (13cm)