Is The Waistcoat Size The Same As The Jacket Size?

Waistcoats are ordered by chest size only, and will normally be the same chest as the jacket. The only times this ought to differ are:

If the wearer's stomach measures greater than their chest measurement, then we would recommend selecting 1 size bigger for the waistcoat than the jacket.

If the wearer has chosen a 34" jacket, then we would recommend ordering a 36" for the waistcoat.