Babolat RPM Rough is a textured version of Babolat's best-selling co-polyester string RPM Blast. Made of the same material and with the same octagonal shape as RPM Blast, RPM Rough has a rough texture thanks to the small Babolat logos that are imprinted into the strings surface. The result is a string that has even more grip than standard RPM Blast, which should result in even more spin potential.