JOOLA RHYZM 425. JOOLA Rhyzm 425 is ideal for the modern loop player who likes to perform with power. One step down in hardness from the original Joola Rhythm but still designed for quality players adopting a modern attacking game. Ambitious players with competent technical skills will be delighted by the catapult effect which gives greater speed but with less effort – the result is to give your opponent less time to play his game and allow you to dominate. The grippy surface ensures good arc when looping even at mid distance and away from the table.