Super-premium 6K Carbon construction with Japanese Carbon for maximum durability of the racket but also performance in all strokes. Tri-Max reinforcement provides stability for increased control in your strokes and Booster Grooves along the frame guarantee increased speed in your attacking strokes. This racket is round which means the sweet spot is more centered and a bit larger. The balance is more in the middle of the racket so this is suitable for you who want to play with a lot of finesse and control. However, you get good speed in the racket when you really push in your strokes. The surface of the racket is a "sandpaper surface".