Tecnifibre uses VO2 Max technology to facilitate the "breathability" of the racquet. During ball impact the racquet flexes in a particular pattern (aka "breathing"). Tecnifibre uses this VO2 Max Technology to regulate the flex pattern of the racquet through the use of 1)Carbon Stabyl Fibers and 2)Carbon Reflex Fibers in order to achieve the specific feature/benefit. Sharp new graphics for the VO2 Max line ensure Tecnifibre's new technology has a little flash to go along with the function. TFight frames geared to the more advanced player, with the TFlash frames providing more forgiveness commonly found in 'tweener racquets.