Refined over countless prototypes, this is a true all-in one shape designed from the ground up for the female torso. The entire design has given thought to the realities of a Women's sillhouette. The Duo is a modern segmentation to create the curve of the vest from underarm to hip.  Simply put rather than meeting and a single fold on either side, this vest wraps around the body with two fold either side creating a slightly contained shape.