![Tretorn Plus - Tennis balls - 4 pieces - Yellow Tretorn Plus - Tennis balls - 4 pieces - Yellow](https://www.oudetennisballen.com/967-large_default/tretorn-plus-tennisballen-4-stuks-geel.jpg)
* Suitable for: all surfaces
* Filling : not filled with gas, retains its rump
* Content: 4 balls
* Color yellow; highly visible due to High Visibility felt
These pressureless tennis balls are approved by the International Tennis Federation and are ideal for use in training and competitions.
The tennis balls are made of durable rubber and woven felt and therefore have a consistent bounce.
Due to the brightly colored fluorine felt, the balls are clearly visible on the tennis court.