Based on the Optra and Speed Effect Inside Technologies and its further developments, TIBHAR created a Premium product, GENIUS OPTIMUM. The pimple structure of GENIUS OPTIMUM is a little bit different and smaller than the pimple structure of Genius, thus conferring more rotation and an unbelievable dynamic in topspin games. Are you looking for a rubber for your double-sided topspin game, would you rather play topspin duets? GENIUS OPTIMUM is made for you.