Originally Posted by Claghorn
Does one use chest circumference or jacket size to calculate drop?
Jacket size; a 40R labeled RLBL jacket will have a 33' trouser waist.
That being said, RLBL is one of the only brands that has an accurate corresponding drop. Alot of other brands will be a tagged drop 8, but only have a 6 inch difference between the jacket and trouser waist. This is commonly referred to as a vanity drop.