- Class: All-Round
- Surface: Inverted
- Speed: 10.0
- Spin: 8.0
- Density: 38
Butterfly's most successful rubber since its introduction in 1967.
More than 20 World & 70 European titles have been won with Sriver.
A hard & tacky surface and medium hard & flexible sponge makes it the best choice for all-round attackers.
Its consistency proves it's the all-time winner.