ACTIBREEZE™ technology is an advanced breathability feature that's developed to help runners keep cool and comfortable. The VENTILATE ACTIBREEZE™ TANK was engineered by our running apparel team for training in warmer conditions. This top's strategic body-mapped fabric provides advanced ventilation in key heat zones. Lightweight and quick-drying, it's also made with large slits on the sides that are functional for improving airflow and increasing freedom of movement.Style #:2012C227.301UPC #: