Size Recommend for Kid Sole Length Sole Width 1(US11) 0-6 Months 11.5cm / 4.5'' 6.0cm / 2.36'' 2(US12) 6-12 Months 12.3cm / 4.8'' 6.2cm / 2.44'' 3(US13) 12-18Months 13.5cm / 5.31'' 6.5cm / 2.55" Material: CanvasStyle: Crib ShoesSize: Fit For 0-18 Months Baby