Neo CS Carbon Nanotube - provides added bite to the shuttlecock and Sonic metal increases the ability to deliver a high repulsion, rapid fire return.Isometric technology - was invented by Yonex to maximise the vital sweet spot area and is now a world leading feature of the rackets. The square shaped head of the racket means that there are more strings crossing at right angles, resulting in a bigger sweet spot. Yonex continues to develop and enhance Isometric power, reducing still further the inert space around the edge of conventional rackets, creating a far bigger sweet spot than other frames.New grommet pattern - the single pass grommet hole construction provides more grommet holes for a more high performance stringing pattern.Solid feel core - the built in solid feel core cuts harmful miscellaneous vibration at impact. Aero + Plus box frame - Combines solid hitting feel and quick swingNew Built in T Joint - manufactured from a special lightweight plastic combined with epoxy resin and foaming agent that enhances quality and performance by increasing the stability of the shuttle on the string bed and through the air.Ultra PEF - The shaft is constructed using Ultra PEF (ultra poly ethylene fibre) which is light enough to float on water yet able to withstand immense forces. These characteristics allow for maximum shock absorption.Control Support Cap - The control support cap provides an 88% wider flat surface compared with an ordinary racket for easier gripping, fast follow through and the sharpest maneuverability.