Hanes

boys Underwear tops
size chest waist
XS 2/4 19 - 22 18 - 21
S 6/8 22 - 26 21 - 23
M 10/12 26 - 30 23 - 26
L 14/16 30 - 34 26 - 28
XL 18/20 34 - 36 28 - 30

All sizes in inches unless otherwise noted.