So what i heard..The Tenergy 99 will be as fast as the Tenergy 64. But contrary it will have the pimple structure of the Tenergy 25-Version.
The pimples will be a little bit longer than those of an Tenergy 25 but the rubber surface will be smoother.
It has the byname "Largestorm" but it is not an official byname, it is more the technology that is used to produce this rubber.
The characteristics of the spin will be nearly as those from a Bryce Speed. The sponge should be something similar (at least goes into this direction) of an Sriver G3.
It is developed for very strong and hard smashes and hits (for players with a lot of power) and for players with third ball attacks and those who always try to get a winner as soon as possible.