Wilson's new technology BLX, has used basalt fibres (Basalt is natural volcanic rock) and woven them longitudinally with karophite Black to create one of the most advanced composites in the industry, offering an ideal blend of enhanced traditional feel with explosive power to meet the demands of aggresive players. Articulated Grommet technology for an even bigger sweet spot. Features a unique enhanced feel for pinpoint precision. Free Karakal Grip when you purchase this racket.