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sizing chart

 extra small

small

medium

large

extra large

chest width (1" below armhole)

19 1/2 

20 1/2

21 1/2

23

24

shoulder width

21 1/2

22

22 1/2

23 1/4

24

muscle (1" from armhole)

10 1/2

11 1/2

12 1/2

13 1/2

14 1/2