The Under Armor HeatGear Armor Racer women's sports black tank top is a lightweight tank top made of breathable material and flat seams. * material: 94% polyester, 6% elastane * in a fitted cut made of extremely breathable material * small holes in the fabric provide breathability without being transparent * the material used wicks away moisture and prevents odors * 4-Way Stretch technology allows greater mobility of the garment in in any direction * oppositely directed seams for maximum comfort against your skin * shaped hem provides better coverage * wide shoulder straps * logo on the chest * round neck * functional, running tank top