Size Chart - i've got this shell

Size Length Bust Sleeve Bicep Waist
XS 20.75" 30.5" 9.25" 10.25" 29.5"
S 21.5" 32" 9.5" 10.5"  31"
M 22.25" 33.5" 9.75" 11" 32.5"
L 23.5" 36" 10" 11.5" 35"
XL 24.5" 38.25" 10.25" 12" 37.25"
2XL 25.75" 40.75" 10.5" 12.5" 39.75"
3XL 27" 43" 10.75" 13" 42"