Donic Acuda S1 is a very fast rubber with excellent spin qualities. Play close to or away from the table it is possible to play "loop-loop" as in the days of speed glued rubbers. It is medium-hard sponge, ACUDA S1 is easily controllable and has a great feel. Players can count on ACUDA S1 even in an awkward situation. This rubber may be fast but has great ball control.