core mens long sleeved shirt blackTritaniums long sleeve Core shirts combine excellent comfort, high quality materials and stylish looks. Tritanium Core shirts feature a pleasantly soft and elastic technical material that is noticeably high quality than typical t shirt fabrics. It combines the best features of so called Dri FIT fabrics and traditional cotton fabrics. The shirts also have reinforced back of the neck, which together with the high quality materials and cleverly placed