The new Wilson's nCode technology is designed to alter the molecular structure of carbon fiber by filling micro-voids with special nano-sized silicone oxide crystals. What is the result? This prevents the fibers from moving around - at the molecular level. This causes the Wilson Ncode line of racquets to be the most stable line of racquets on the market; it has much less flex and distortion when you hit the ball. This gives you a bigger sweet spot, move control, and a clean crisp feel when you strike the ball.