Nike Cool Harmony Tank - Women's The Nike Cool Harmony Tank is made of lightweight 100% recycled polyester with a burnout effect that enhances airflow to keep you cool. Dri-FITŪ moisture management quickly and efficiently pulls sweat away from the body to keep you dry and comfortable. Wide scoopneck offers a feminine, comfortable fit. Side seams are moved to the front to reduce chafing. Swoosh design trademark on the left hem. Imported.