Under Armour Youth Girls' UA HeatGear Armour Solid Sports Bra 90% Polyester/ 10% Elastane Imported Fitted: Next-to-skin without the squeeze Super-light HeatGear fabric delivers superior coverage without weighing you down Signature Moisture Transport System wicks sweat to keep you dry and light Lightweight, 4-way stretch construction improves mobility and maintains shape Anti-microbial technology keeps your gear fresher, longer