The yonex muscle power 3 badminton racket offers a great amount of repulsion and boasts a graphite shaft and a muscle power aluminium frame this medium flex racket has an even balance and uses yonexs isometric technology to expand the size of the sweet spot in the head meaning the power potential is higher and forgiveness on off centre shots is increased the muscle power frame reduces stress and friction on the strings resulting in better more reliable performance the racquet is supplied