Speed:Describing the rubber’s effect on ball speed in a relative manner measured/evaluated by Butterfly’s unique tests. The higher the value, the faster the speed and the more suited it is to offensive play. On the other hand, the lower the value, the slower the speed, and the more suited it is to defensive play.

Spin: Describing the rubber’s effect on the amount of spin generated on the ball in a relative manner measured/evaluated by Butterfly’s unique tests. The higher the value, the greater the amount of spin produced. On the other hand, the lower the value, the easier it is to generate balls without spin.

Arc (Bogen): Describing the ease of generating a high degree of trajectory on the path of the ball in a relative manner evaluated by Butterfly’s unique tests. The higher the value, the more likely it is that the ball will travel in the same direction as the racket swing during topspins. The lower the value, the lower the ball trajectory gets.