HeatCore Sauna VestHeatCore Sauna Vest Work harder. Sweat smarter. Feel the difference. The HeatCore Sauna Vest is a 3rd generation PU coated sweat vest designed to intensify every workout by trapping heat at your core and maximizing sweat output during exercise. Whether you're running, lifting, or doing any kind of training this vest turns up the intensity without changing your routine. The odor free 240g fabric sits close to the body and fits seamlessly under any