Yonex has fused Ultra PEF from Arc Z Slash and Armortec 900 Elastic Ti, together into the material of the Badminton Racket that generated explosive power and control. This was the superb combination of control and power. It is an excellent move for Yonex to learn - the Carbonex technology and design. Combining their current and past success, Yonex has discovered a racket close to perfection. Solid resonance and feel on impact, the hallmark of the famous Carbonex Series Box Shape, continue to make these powerful racquets favourites among many others. The Box Shape construction suppresses twisting on impact for more power and accuracy.