0-6 Months      11cm/4.33"     5.6cm/2.20"

6-12 Months   12cm/4.72"      5.8cm/2.28"

12-18Months  13cm/5.12"      6.0cm/2.36"

Tips:1.Please choose the size,the age is just for reference.

2.There is 3-5% difference according to manual measurement.

Any problem, just feel free to contact us, we will try our best to solve your problems at once.