Columbia Women's Athletic Bonded Micro Tank 82% Polyester, 18% Spandex Imported Machine Wash Racer back tank with bonded mesh insert on shoulder straps and mesh back for breathability Athletic design for indoor or outdoor lifestyle in fun colors Wear your favorite racer back sports bra under this racer back tank top Omni-wick advanced evaporation pulls moisture away from the body and enables perspiration to evaporate quickly, keeping you dry and comfortable Tag less comfort