Men's Size Guide
  S M L XL XXL
Neck circumference (Measured comfortably around neck) 14-14.5  15-15.5  16-16.5 17-17.5 18-18.5
Chest circumference (Measured comfortably around chest below armpit) 38-40 40-42 42-44 44-46 46-48
Waist circumference (Measured comfortably around true waist where you like your pants to sit) 28-32 32-36 36-40 40-44 44-48
Sleeve length 32-33 33-34 34-35 35-36 36-37
Boys' Size Guide
  4 6 8 10 12 14 16
Height (In inches) 40-44 44-48 48-52 50-53 53-57 57-62 62-66
Weight (In pounds) 35-45 45-60 60-75 75-80 80-90 90-115 11-130
Neck circumference (Measured comfortably around neck) 10.5-11 11-11.5 11.5-12 12-12.5 12.5-13 13-13.5 13.5-14
Chest circumference (Measured comfortably around chest below armpit) 22-24 24-26 26-28 28-30 30-32 32-34 34-36
Waist circumference (Measured comfortably around true waist where you like your pants to sit) 21-23 23-25 25-27 27-29 29-31 31-33 33-35
Sleeve length 20-21 21-22 22-24 24-26 26-28 28-30 30-32
Inseam 17-18 20-21 23-24 25-26 27-28 29-30 31