Sport-Tek Ladies PosiCharge Tri-Blend Wicking Tank. LST402This ultracomfortable racerback tank combines moisture-wicking performance, unbeatable tri-blend softness and PosiCharge technology to lock in color., 4.4-ounce, 75/13/12 poly/cotton/rayon jersey with PosiCharge technology, 4.6-ounce, 75/13/12 poly/cotton/rayon jersey with PosiCharge technology (Black Triad Solid), Tear-away removable label, Self-fabric binding at neck and armholes, Slight drop tail hem