The WTT DJ40+ balls are of the same material as the D40+, but the criteria by which they are chosen is much stricter.
The new ball for all WTT 2021-2022 Tournaments.
With higher precision in weight, roundness and hardness than normal 3 star balls.
The DHS WTT seamed ball is created from a new type of plastic which provides a good bounce trajectory. Thanks to the new material used, the ball has enhanced durability. This ball is ITTF approved, and is used in most international ITTF competitions.