About This Design
Ayn Rand was once asked if she could present the basics of her philosophy, in short form, while standing on one foot. Her answer was:
If you are interested in reading an expanded explanation, this article by The Atlas Society is a great place to start.
For width, measure under arms around the fullest part of the chest. Be sure to keep tape level across back and comfortably loose. For length, measure from the top of the shoulder.