Durable, comfortable and functional. 88% Tactel nylon, 7% nylon, 5% spandex. Three distinct zones of compression. Moisture wicking technology. Anti-microbial to reduce body odor. Quick-drying, Saddle shoulder construction. Underarm mesh panel for greater range of motion. Flat-lock seams to prevent chafing. Printed Label to prevent chafing. Four colors. The Muscle Mapping shirt features three distinct zones of compression that allow for greater range of motion.