Sweat vest: Get a sauna-effect sweat vest. Training vest: Wear while training at the gym to help increase your weight loss results! : Can help to compress and shape your body, train your waist and support your posture. Men's sizes: S-3XL (see size chart in Full details below). Fabric: Breathable, quick dry and super stretchy material (Outer: 90% polyester, 10% spandex. Inner: 100% polyurethane). Women's sizes: In women's UK sizes 8-18. | Men's or Women's Sauna-Effect Sweat Vest Body Shaper - Black | Wowcher