short-sleeve basic fit size chart
YXS(2-4)...14"wx16.5"L
YS(6-8)...16"wX19.5"L
YM(10-12)...17"wx21.5"L
YL(14-16)...18"wx23"L
AS...17"wx22.5"L
AM...18"wx22.5"L
AL...19"wx24.5"L
AXL...19.5"wx25"L
AXXL...20.5"wx25.5"L
*W=armpit to armpit
*L=nape to tail