Offering incredible spin to go along with surprising playability, the Volkl Cyclone 18g Tennis String is now available in a graphite color and it features a highly geometric gear shape, which combines with co-polyester construction. The multi-sided shape features significant ridges, which help to bite the ball and result in the ability to generate tremendous amounts of spin. As with many shaped strings, Cyclone uses a block co-polyester construction providing a combination of different properties of unique materials. The advantage of this construction is that every aspect of performance in a string can be tuned by altering the block associated with it. The overall effect is that this string offers enhanced ball speed, improved control, and most importantly, incredible spin as compared to typical polyester strings. We found that this string performed best from the baseline for hard-hitting, heavy spin players, but still provides enough feel for the occasional trip to the net.