98% Polyester, 2% Spandex. Fabric provides stretch. Size OS best fits heights between 5'0" and 5'8", weights between 90 lbs and 148 lbs. Size Tall best fits heights between 5'6" and 5'10", weights between 135 lbs and 175 lbs. Hand wash cold. Do not bleach. Hang to dry. Imported.