The GEWO nanoFLEX FT 40 is a flexible and soft rubber. It gives an excellent feeling and utmost control in all match situations. The enormous sound when playing a top spin stroke gives you a good indication of the power of this rubber. A very tacky surface with a soft and highly dynamic sponge produces powerful spin play for all variations. The fine balance of the flexible nanoFlex surface with a soft sponge is perfect for all players who make high risk attacking strokes from middle distance. A very forgiving rubber reducing error strokes to a minimum. Discover the feeling and joy of top spin variations in all situations.