Because all children shoes size is difference,When you order the children's shoes,you should according to Our size and internal length.
According to the Insole length.(Insole length=Foot length +1cm)
The size is Not Standard ,Just convenient for you to do order.
The comfortable length is the foot length add about 1cm.
And Because of the long time delivery time and child will grow up fast please choose more bigger size shoes for your child.
Please choose the right size.
Note:This shoe has no switch, it will glow when the child walks. It is not USB charging, only the built-in battery, when the battery is exhausted, it will not shine.