This is a BRAND NEW with tags Nike women's athletic training top. It has Dri-FIT technology to help keep you cool and comfortable. The straps are adjustable, and the shirt itself has side slits to make for an even more flattering look. It is 100% polyester and a size M. Kill it at the gym or just throw it on to run to the store. Either way, it is a very cute and comfortable tank top for hot summer days!