Sport-Tek Women's PosiCharge Competitor Racerback Tank. A layerable, moisture-wicking must-have with PosiCharge technology to lock in color-all at a great value. 3.8-ounce, 100% polyester interlock with PosiCharge technology Removable tag for comfort and relabeling Self-fabric binding at neck and armholes Given the extreme heat required for sublimation, please consult with your decorator. It is highly recommended to sample test product by color before production.