Under Armour HeatGear Amourvent Apollo Half-Zip Running Top ArmourVent Mesh Technology - Delivers true breathability in a light, stretchy, durable, fast-drying fabric. Moisture Transport System - Wicks sweat away from the body. 4-way Stretch Fabrication - Allows greater mobility in any direction. Anti-odour Technology - Prevents the growth of odour-causing microbes. Articulated Cuffs - With performance thumbholes.