110=2T: fits for: 95-105cm height , fits for: weight 12-15KG 

110(2T) Recommended height 90-105CM Recommended weight 12-15KG
120(3-4T) Recommended height 105-115CM Recommended weight 15-19KG
130(5-6T)Recommended height 115-125CM Recommended weight 19-22KG
140(7-8T)Recommended height 125-135CM Recommended weight 22-27KG
150 (9-10T)Recommended height 135-145CM Recommended weight 27-32KG
160 (11-12T)Recommended height 145-155CM Recommended weight 32-37KG
The above data is for reference only, please choose according to your child's weight
120=3T/4T: fits for: 105-115cm height ,fits for: weight 15-19KG 

130=5T/6T: fits for: 115-125cm height  ,fits for: weight 19-22KG 

140=7T/8T: fits for: 125-135cm height  ,fits for: weight 22-27KG 
150=9T/10T: fits for: 135-145cm height  ,fits for: weight 27-32KG
160=11T/12T: fits for: 145-155cm height  ,fits for: weight 32-37KG
Note:Please check the figures carefully and order the right size, don't completely depend on the " age advice". It's just for reference.