A diagonal vest is a unique and stylish outerwear piece characterized by its diagonal or asymmetrical design. Instead of having a traditional straight or vertical front closure, the vest features a diagonal line that crosses the chest, creating an interesting and eye-catching visual element.

The diagonal line in the vest's design can be achieved through various methods, such as a zipper, buttons, snaps, or even a wrap-style closure. This unconventional placement adds a modern and edgy twist to the traditional vest silhouette.