Tretorn Series+ 4 tin

The Tretorn Series+ is an ITF (International Tennis Federation) approved tennis ball used at a number of ATP tournaments. The ball was known as the official ball for the ATP Challenger Series. The Tretorn Series+ tennis ball is built slightly differently than other tennis balls. This ball is made with the TRI-TEC system to maintain the pressure of the ball. This means that a membrane is placed around the rubber core of the ball to ensure optimal pressure for longer. Many gas-filled tennis balls do not last very long (become soft quite quickly), this ball performs a lot better in that regard. The rubber core of the ball is slightly thinner than usual for optimal ball feeling and also because the special membrane is placed over it. Finally the felt layer. The Milliken felt is made for extra durability and therefore a consistent performance of the ball.

Read our extensive test report of this ball here!