Size S: Recommended Age: 0-6 Months; Heel to toe Length:11cm/4.25inches
Size M: Recommended Age: 6-12 Months; Heel to toe Length:12cm/4.76inches
Size L: Recommended Age : 12-18 Months; Heel to toe Length:13cm/5.11inches
Note: The recommended age is just for your reference,Please measure your baby's foot length to choose the right size for your baby. Besides there might be slight colour deviation due to different displays.