The Ionic Ki-5 is the next step up in player's frames. The Ionic system is 56% more effective than the Kinetic System alone. Jetron particles are added to the kinetic mass that are in the chambers in the frame's head. They remove the static charge by ionizing the kinetic mass so that the mass can move freely in the chambers and produce more energy for a clean and unique feel. This solid frame has the ultimate in control and maneuverability for great shots all around the court. Headlight, flexible and very arm friendly, it is recommended for advanced players with long, fast strokes. Suited for 4.0 to 5.5 players.