Comfortable and durable pressurised balls, adapted for all levels. It is equipped with the new X D-Core technology. X D-Core by Tecnifibre is a breakthrough technology reducing by 20% the ball deformation during the game. This innovation allows the core to keep its initial shape over a longer period of play. At the same time, the ball keeps the same dynamic signature and therefore the same feel. Play longer with same playability. Can be played on all surfaces. Approved by the ITF and FFT.