Glyder Women's Open Heart Bra 88% Nylon/12% Spandex Imported Flat seam garment construction eliminates chafing Breathable mesh lining and slits for cups (cups not included) Supportive 1" wide elastic shoulder straps Bottom bust and middle back mesh piecing allow for ventilation when workouts heat up Moisture wicking; Machine wash COLD, with like colors and fabrics; DO NOT USE FABRIC SOFTENERS