TIBHAR 5Q Sound rubber: The proven and highly flexible rubber surface of the TIBHAR 5Q was reworked, and the 5Q Sound offers approximately 15% more spin. Combined with a softer sponge, it confers an extraordinary playing sensation fitting perfectly into a topspin game. If you place rotations and sensation in your game above other playing characteristics, 5Q Sound is made for you! 5Q Sound confers a sound which is very close to the sound of a speed glued rubber. Controlled, spin-friendly strokes, without a big speed loss, are the main characteristics of this rubber.