This shirt is unlabeled inside and is being listed as a medium based on size comparisons. The product is a women's black cropped tank top with tie shoulders and a tie waist featuring the official Heart 2014 concert tour design. Made from a comfortable cotton blend material, this sleeveless top has a crew neckline and is in size M. Perfect for fans of the 80s and 90s rock band Heart, this stylish and unique piece adds a trendy touch to any outfit.