The SL series uses the 'Muscle Tec' string system, to enlarge the power zone of the racket by allowing the strings to move over a smooth rounded surface rather than being static as in conventional rackets. 'Muscle Tec' enables the strings to be strung at a lower tension yet still gives a high tension feel. It also uses Nano Technology and Nano Superlight...
Isometric head, Nano Technology and Nano Superlight Resin updates make this powerful and responsive frame even better. High Strength Head Loops benefit from 'Muscle Tec' technology as they are more rigid due to the design of the Muscle section.
Using the same Ultra Lite Extreme Carbon Gel construction as the BN60, this racket is half painted to give an eye catching new frame that keeps the weight to a minimum but retains the benefits of the Ultra Lite construction.