Long-sleeved covering developed according to the ITTF regulations with a special rubber structure and flexible, easy-to-grip bump heads. The DL-01 allows both dangerous cutting variations in the long defense as well as effective interference actions at the table. While the assumption of strongly rotating impacts is easy, the flight curve of the ball is relatively flat but still difficult to estimate by the opponent during the setback. This results in a higher interference factor compared to conventional grippy long knobs. Our recommendation for all material players who have not yet found an alternative after the ban on the smooth knobs.