The Crystal range is a direct upgrade from the Pro series, new Technology which dramatically improves resin flow in the moulding of the frame giving a more consistent Hot Melt process which increases Power Touch and Durability. Light 135gram racket. Nano superlight resin with crystal technology. A Power shaft with Tri tec frame system. Inner muscle system. Nano Graphite Titanium. Constant taper frame 20-16. One piece construction with a square string pattern 14/19, come complete with full racket cover. Free Karakal Grip when you purchase this racket.