No other marquee can claim a better track record when it comes to designing and manufacturing thoroughbred racket equipment than PorKennex. During their history, their innovative engineering approach and problem solving expertise has resulted in more racket patents issued than all other brands combined. Each ProKennex paddle is the Kinetic System. Tungsten beads within the immovable chambers dampen and reduce shock and vibration keeping your arm safe. According to MIT Sports Dynamic Laboratory the "Vibration dampening ratio enhancement is 43%", "Power zone enlargement is about 12 to 15%" and "Shock reduction is better than 20%". Check out ProKennex for high-performance AND healthy play.