B-Core Tank Top Size Chart

YOUTH  XS S     M L XL 
Body Length   20 21 22 23 24
Chest Width (Laid Flat) 13 14 15 16 17

 

ADULT XS S     M L XL  2XL 3XL
Body Length   27 28 29 30 31 32 33
Chest Width (Laid Flat) 16 17 19 21 23 25 27