Size chart:

Tag No.    Age       Pants length       Waist*2   

110         4-5Y       63cm/24.6"      20cm/7.8"   

120        5-6Y        68cm/26.5"      21cm/8.2"   

130        6-7Y        73cm/28.5"      22cm/8.6"    

140       7-8Y        77cm/30.0"       23cm/9.0"     

Note:                                                                                                    
Because of factorssuch as display pixel, so there may be a little color difference
Because of the different measurement methods, there may be 1-3cm of the allowable range error.