HeatGear fabric, with all the benefits of UA Compression, comfortable enough to be worn all day Stretch-mesh underarm panels deliver strategic ventilation UPF 30 protects your skin from the sun's harmful rays 4-way stretch construction moves better in every direction Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Mesh panel on back neck with ARMOUR wordmark Body: 4.7 oz. 90% Polyester/10% Elastane Mesh: 3.5 oz. 88% Polyester/12% Elastane Imported Style #: 1257471