Back on track therapeutic v-neck t-shirt, black, small (chest 35.5 inch neck 14 inch to 17 inch ). Back on track therapeutic t-shirts are made from state-of-the-art welltex fabric infused with ceramic powder. The ceramic reflects your natural body heat and creates a soothing far infrared thermal warmth which is a recognized method to reduce inflammation, ease muscle tension, increase blood circulation and hasten the healing process. Wear this t-shirt prior to exercise to loosen and warm up muscles and to prevent injury. Particularly helpful in relieving shoulder pain. .