Under Armour HeatGear ArmourVent Perf Compression Shorts ArmourVent Mesh Rear and Side Panels - Supplement the garment's already extensively perforated quality to yield complete breathability and consistent airflow. 4-Way Stretch Fabrication - Permits a full range of motion and unimpeded comfort. Signature Moisture Transport System - Efficiently wicks sweat away from the body to keep the wearer cool, dry and focussed. Anti-Odour Technology - Eradicates odour carrying microbes before they have a chance to spread Flatlock Seams - Minimise bulk and the risk of skin irritation via chafing.