Butterfly Dignics 05 FX

The Dignics 05 FX is the softer version of the standard Dignics 05, with a lower sponge hardness on Butterfly's scale that makes it easier to engage the sponge and generate spin with less swing force. Both rubbers use the same top sheet and Butterfly's Spring Sponge X technology, but the FX version is aimed at players who want more dwell time and a softer feel, while the standard Dignics 05 suits harder-hitting, faster-swinging players.

The Dignics 05 FX has a sponge hardness of approximately 36 degrees on Butterfly's own measurement scale, compared to about 40 degrees for the standard Dignics 05. This places the FX in the soft-to-medium category, making it more forgiving and easier to control for players who do not generate maximum racket speed on every stroke.

Yes, the Dignics 05 FX is a popular backhand rubber because its softer sponge allows players to generate effective topspin on backhand loops and counter-drives without requiring the very high swing speed that the harder Dignics 05 demands. Many European-style backhand attackers prefer the FX on the backhand while keeping a harder rubber on the forehand for maximum power.

The Dignics 05 FX uses Butterfly's proprietary Spring Sponge X, an updated version of the original Spring Sponge introduced with the Tenergy series. Spring Sponge X is designed to hold the ball longer on the rubber surface (increased dwell time) while providing strong energy return, and it is manufactured in Japan at Butterfly's own facilities rather than through ESN in Germany.