Butterfly High Tension TechnologyHigh Tension rubber sheets have tension built into the sponge and top sheet. This helps reduce the amount of energy lost at the point of impact. In essence, it turns the speed of your opponent’s shot into additional power for you. In short, High Tension rubber sheets are fast, very fast. The first such rubber was Bryce, introduced in 1997. It is by far the most widely used rubber among Bufterfly’s sponsored players including the 2003 World Champion, Werner Schlager (Austria). Products | 
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