Champion The Infinity Shape Racerback Seamless Sports Bra (B0826) Solids: 95% Nylon, 5% Spandex; Heather: 53% Nylon, 43% Polyester, 4% Spandex Imported Pull On closure Machine Wash Moisture management technology wicks moisture away from the skin Seam-free for chafe-resistance Knit-in supportive inner bra Removable foam cups for shaping and modesty Knit-in mesh for ventilation