Used by some of the best players in professional tennis, Wilson tennis racquets offer the latest innovation and highest quality performance available anywhere. Wilson introduces new BLX technology in several Wilson BLX Racquets frames for 2010, which adds Basalt fibers to the frame for enhanced feel and reduced vibration. Wilson [K]arophite Black represents an evolution of Wilson nCode technology that utilizes additional bonds between the SiO2 and graphite molecules on a nanoscopic scale, resulting in more feel and a stronger, more stable tennis racquet. Two external wings molded into each side of the hoop increase dwell time of the ball upon impact, providing greater control and comfort.