Diadem Performance T-shirt 65/35 polyester/cotton blend tag-less shirt. -- Diadem Performance String Logo T-shirt.  This 65/35 polyester and cotton blend is comfortable and light weight making it the perfect shirt to wear while using your Diadem strings.  These shirts were made specifically to Diadem specifications with a fashionable fit and comfortable feel. Available in YL, XS, S, M, L, XL, XXL in a variety of colors: Black w/teal logo Black w/white logo Black w/pink logo White w/teal logo White w/grey logo White w/blue logo