When you have a horse that is sensitive or a difficult shape, girths can be tricky to get right and a source of great expense. If there is something you think might work but just aren't sure, why not try it on the girth bank.
With a trial period of 2 weeks you can try your required girth with the piece of mind that, if it isn't right, you are not going to be out of pocket for what can be a 3 figure sum.