3900 Size Chart

S M L XL XXL
Body Length  25 3/8" 26" 26 5/8" 27 1/4" 27 7/8"
Body Length Tolerance 1/2" 1/2" 1/2" 1/2" 1/2"
Body Width 16 1/4" 17 1/4" 18 1/4" 19 1/4" 21 1/4"
Body Width Tolerance  1/2" 1/2" 1/2" 1/2" 1/2"

Measurements in inches