t shirt size XS for 3-4 years, S for 5-6 years, M for 7-8 years, L for 9-11 years, and XL for 12-13 years.
Jumper Size - XS for 3-4 years, S for 5-6 years, M for 7-8 years, and L for 9-11
 
Printed on Gildan red or black garments. 
 
These are children sizes.