Diadem Sports Nova 105 FSThe Diadem Nova 105 Lite and Ultra Lite rackets are Diadem's first over size frames. After years of experimenting we have created the ultimate combination of a high end with function. These user friendly and extremely forgiving 105 square inch head combines excellent stability and created the World's most comfortable sweet spot. Flex Stabilization System (FS) is the first technology to utilize patent pending rib structure in the frame that combines