Tecnifibre uses VO2 Max technology to facilitate the "breathability" of the tennis racquets. During ball impact, the racquet flexes in a particular pattern (aka "breathing"). Tecnifibre’sVO2 Max Technology regulates the flex pattern of the racquet through the use of Carbon Stabyl Fibers and Carbon Reflex Fibers in order to achieve the flexibility and breathability that players desire. Sharp new graphics for the VO2 Max line ensure Tecnifibre's innovative technology has a little flash to go along with the function. TFight frames are geared to the more advanced player, while the TFlash frames provide more forgiveness commonly found in “tweener” tennis racquets.