Big, sorry I didn't see this before I got my son off to daycare this morning. He is 4. If you don't have any help by this afternoon I will measure his draw length when he gets home. Good luck.

Big, I just laid one of my son's shirts on the ground. I laid it flat out with arms out. I measured from the centerline of the chest to the end of the cuff and it measured exactly 20 inches. Not sure if that gives you any help.

Brett