Under Armour Men's UA Combine Training B.I.C. Short Sleeve Cocona fabric disperses moisture quickly to dry incredibly fast, keeping you cooler ArmourVent mesh back delivers true breathability in a light, stretchy, durable, fast-drying fabric Moisture Transport System wicks sweat away from the body Anti-odor technology prevents the growth of odor causing microbes Bonded seams allow chafe-free movement