Sizing

For T-Shirts:

XS S M L XL 2XL 3XL 4XL
Body Length 26 1/2 28 29 1/4 30 1/4 31 1/4 32 1/2 33 1/2 34 1/2
Body Length Tolerance 1 1 1 1 1 1 1 1
Body Width 16 18 20 22 24 26 28 30
Body Width Tolerance 1 1 1 1 1 1 1 1

For Sweaters: 

S M L XL 2XL 3XL 4XL 5XL
Across Shoulders 19 1/2 21 1/2 23 1/2 25 1/2 27 1/2 29 1/2 31 1/2 33 1/2
Body Length 26 1/2 27 1/2 28 1/2 29 1/2 30 30 1/2 31 31 1/2
Chest Width 20 22 24 26 28 30 32 34
Sleeve Length 24 3/8 34 5/8 24 1/4 24 23 3/4 23 1/2 23 1/4 23