A shrug or bolero jacket is an article of clothing, a sleeve sweater that covers the chest, shoulders and/or arms. It is usually worn by women. Generally, a shrug covers less of the body than a vest would, but it is more tailored than a shawl. It is shorter than a vest, covering a small portion of the upper body. When worn, some shrugs are tied together just below the breasts, while another style is cut-off at the sides, exposing the breasts. Shrugs are typically worn as the top layer of an outfit, with a full shirt or tank top beneath. It is typically called a shrug when it is a sweater or made of knitted material. Another name for this is bolero jacket. These are not knitted and are considered slightly more formal. They are simply short tailored jackets.