With improved speed and maximum spin due to in-built speed glueing effect! Donic Desto F1 is the fastest rubber from the DESTO Formula series. A high-tech weapon for well trained players of ability, who require more speed from their rubber. Qualities of spin and speed previously unknown for unglued rubber sheets. The built-in speed glueing effect produces good sound, softness, plus speed and spin. The new formula rubber is exciting to play with!