Gilden 100% Cotton Shirts
UNISEX 
  S M L XL 2XL 3XL 4XL
Width (in) 18 20 22 24 26 28 30
Length (in) 28 29 30 31 32 33 34

 

'LADIES'
  S M L XL 2XL 3XL 4XL
Width (in) 17.25 19.25 21.25 23.25 25.25 27.25 29.25
Length (in) 25.5 26 27 28 28.5 29 30

 

YOUTH

  YXS YS YM YL YXL
Width (in) 16 17 18 19 20
Length (in) 20.5 22 23.5 25 26.5

 

Width
This is the measurement of a t-shirt lying flat on the ground from armpit to armpit - sometimes this gets confused with chest measurement, which goes all the way around your chest, but this one is just the front of the t-shirt.

Length
This is the measurement of the back of the shirt, from top to bottom.