Felt
This ball is made of 63% felt, making it very stable and robust.
Core
This ball has a core made from natural rubber. This provides a quality bounce and excellent robustness.
Weight
58.5 g
ITF standard between 56 g and 59.4 g.
Diameter
6.55 centimetres
ITF standard between 6.54 centimetres and 6.86 centimetres.
Bounce height
143 cm (ball dropped from a height of 2.54 m)
ITF standard between 135 cm and 147 cm.
Ball deformation
High viscosity index for a more comfortable ball.
The viscosity index is calculated based on the ball deformation measurements.