HeatGear® fabric is ultra-soft & smooth for extreme comfort with very little weight. UPF 30+ protects your skin from the sun's harmful rays. 4-way stretch fabrication allows greater mobility in any direction. Moisture Transport System wicks sweat & dries fast. Anti-odor technology prevents the growth of odor causing microbes. Mesh panel on back neck with ARMOUR wordmark. 4.7 oz. Polyester/Elastane. Imported.