Under Armour Women's HeatGear Armour Mesh Tank 90% Polyester/ 10% Elastane Importado Super-light HeatGear construction delivers superior coverage without weighing you down Sporty power mesh insets at back & straps for amazing breathability Signature Moisture Transport System wicks sweat to keep you dry & light Lightweight, 4-way stretch construction improves mobility & maintains shape Anti-odor technology prevents the growth of odor-causing microbes